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Patent
BOE Technology Group and Beijing BOE Optoelectronics Technology Co. | Date: 2017-05-10

The present disclosure provides a pixel structure, a display apparatus and a driving method and a manufacturing method for the pixel structure. The pixel structure includes a pixel electrode and a pixel switch including a gate electrode, an upper source electrode, an upper drain electrode, an upper active layer, a lower source electrode, a lower drain electrode, and a lower active layer. A bottom-gate TFT is formed by the upper source electrode, the upper active layer, the upper drain electrode and the gate electrode; a top-gate TFT is formed by the lower source electrode, the lower active layer, the lower drain electrode and the gate electrode. The upper source electrode is connected to the lower source electrode. The pixel electrode includes a first sub-pixel electrode and a second sub-pixel electrode. The first sub-pixel electrode is connected to the upper drain electrode for receiving a first signal; the second sub-pixel electrode is connected to the lower drain electrode for receiving a second signal from the bottom-gate TFT different from the first signal. In the present disclosure, the touch technology and 3D display technology are integrated as a whole, the production process is relatively simple and a resolution of the display is improved.


Patent
BOE Technology Group and Beijing BOE Optoelectronics Technology Co. | Date: 2017-05-03

The present invention provides a low-temperature polysilicon thin film transistor array substrate and a method of fabricating the same, and a display device. The array substrate comprises: a substrate; a polysilicon active layer provided on the substrate; a first insulation layer provided on the active layer; a plurality of gates and a gate line provided on the first insulation layer; a second insulation layer provided on the gates; a source, a drain, a data line and a pixel electrode electrically connected with the drain, which are provided on the second insulation layer, the source covers the plurality of gates. The plurality of gates are provided directly below the source, so that the leakage current is reduced and the aperture ratio of panel is improved.


Patent
BOE Technology Group and Beijing BOE Optoelectronics Technology Co. | Date: 2017-05-17

A pixel circuit comprising two sub pixel circuits (PI, P2), each of which comprises: five switching units (T1, T2, T3, T4, T5), a driving unit (DT), an energy storage unit (C) and an electroluminescent unit (L). A first switching unit (T1), a second switching unit (T2) and a fifth switching unit (T5) of a first sub pixel circuit (P1) and a first switching unit (T1), a second switching unit (T2) and a fifth switching unit (T5) of a second sub pixel circuit (P2) share a scanning signal line. In the pixel circuit, the operating current flowing through the electroluminescent unit is not affected by the threshold voltage of the corresponding driving transistor, which solves the problem of non-uniformity of display luminance because of the threshold voltage drift of the driving transistor. At the same time, driving of two pixels is completed by using one compensation circuit, and the two adjacent pixels share a plurality of signal lines, which can reduce a number of signal lines used for the pixel circuit in the display apparatus, reduce a cost of an integrated circuit, decrease pixel spacing and achieve a higher pixel density.


Patent
BOE Technology Group and Beijing BOE Optoelectronics Technology Co. | Date: 2017-05-17

The present disclosure provides a built-in touch display device and a method for driving the same. Each of a plurality of shielding layers may be arranged between each of the plurality of data lines and each of a plurality of touch driving electrodes. A touch driving signal may be transmitted to the corresponding touch driving electrode when the plurality of first gate line groups corresponding to the common electrodes is in an ON state, and the transmitting of the touch driving signal to the corresponding touch driving electrode may be stopped when the plurality of second gate line groups corresponding to the touch driving electrodes is in an ON state.


Patent
BOE Technology Group and Beijing BOE Optoelectronics Technology Co. | Date: 2017-05-17

Provided are a pixel structure and driving method thereof, and a display apparatus. The pixel structure comprises a plurality of pixel units and compensation units corresponding to the pixel units. Each of the pixel units comprises two adjacent pixel circuits which are a first pixel circuit and a second pixel circuit. The first pixel circuit comprises a first driving transistor (DTFT1) and a first display device (OLED1), and the second pixel circuit comprises a second driving transistor (DTFT2) and a second display device (OLED2), wherein the first pixel circuit and the second pixel circuit share the compensation unit and are controlled by a same data line (Data). The compensation unit is configured to adjust a gate voltage of the first driving transistor (DTFT1) in the first pixel circuit to eliminate the influence of the threshold voltage of the first driving transistor (DTFT1) on the driving current of the first display device (OLED1), and to adjust a gate voltage of the second driving transistor (DTFT2) in the second pixel circuit to eliminate the influence of the threshold voltage of the second driving transistor (DTFT2) on the driving current of the second display device (OLED2). The pixel structure can reduce the pixel size and obtain higher resolution.


Patent
BOE Technology Group and Beijing BOE Optoelectronics Technology Co. | Date: 2017-05-17

An array substrate and its manufacturing method, and a touch display device are disclosed. A display area of the array substrate includes a plurality of thin film transistor (11), first transparent electrodes (12), second transparent electrodes (13) and a transparent insulation layer (16) that contacts the second transparent electrodes (13); the transparent insulation layer (16) is a conductor when a voltage applied thereon is larger than a predetermined voltage, and is an insulator when the voltage applied therein is less than the predetermined voltage. The second transparent electrodes (13) include first sub-electrodes (131) arranged into a plurality of rows in a first direction and insulated from each other, and second sub-electrodes (132) arranged into a plurality of rows in a second direction and insulated from each other, the first direction is intersected with the second direction. The problems such as noise, visual artifacts, insensitive to touch, or the like caused by unbalance of charges can be avoided.


Patent
BOE Technology Group and Beijing BOE Optoelectronics Technology Co. | Date: 2017-05-17

There are provided a pixel circuit and its driving method and a display apparatus. The pixel circuit comprises: a first switching unit (T1), a second switching unit (T2), a third switching unit (T3), a fourth switching unit (T4), a fifth switching unit (T5), a driving unit (DT), an energy storage unit (C) and an electroluminescent unit (L). The first switching unit (T1) is configured to provide operating voltage to the driving unit (DT) under the control of the first scanning signal line (Em); the second switching unit (T2) is configured to reset voltage of a control terminal of the driving unit (DT) under the control of the second scanning signal line (Scan[2]); the third switching unit (T3) is configured to write data voltage on the data voltage line (Vdata) into the first terminal (a) of the energy storage unit (C) under a control of the third scanning signal line; the fourth switching unit (T4) is configured to connect the control terminal and output terminal of the driving unit (DT) under the control of the third scanning signal line (Scan[3]) and enable voltage of the output terminal of the driving unit (DT) to charge the second terminal (b) of the energy storage unit (C); and the fifth switching unit (T5) is configured to conduct driving current generated by the driving unit (DT) to the electroluminescent unit (L) under the control of the fourth scanning signal line (Scan[1]). The pixel circuit is capable of solving the problem of non-uniformity of display luminance because of the threshold voltage drift of the driving transistor.


Patent
BOE Technology Group and Beijing BOE Optoelectronics Technology Co. | Date: 2017-05-17

A touch substrate and a display device, comprising a plurality of first electrodes (10) for touch control, a plurality of first switching units (1) and a control unit (100) for controlling the first switching units (1); any two adjacent the first electrodes (10) are connected through one of the first switching units (1) and each of the first electrodes (10) is connected with the control unit (100). The touch substrate can avoid the problem that charges tend to accumulate on touch driving electrodes and/or touch sensing electrodes during a touch process and cannot be released well in a display phase.


Patent
BOE Technology Group and Beijing Boe Optoelectronics Technology Co. | Date: 2016-01-15

A method and a device for determining a yellowish level of a screen caused by pressing are provided. The method includes: acquiring chromaticity coordinates of a plurality of test points of the screen during a pressing test; processing the acquired chromaticity coordinates, so as to acquire a chromatic aberration between the test point with a maximum value of X or a maximum value of Y in the chromaticity coordinates and the test point with a minimum value of X or a minimum value of Y in the chromaticity coordinates; and comparing the chromatic aberration with a predetermined standard chromatic aberration, so as to determine whether the screen is qualified after the pressing test.


Patent
BOE Technology Group and Beijing Boe Optoelectronics Technology Co. | Date: 2016-01-29

A display panel and its driving method and driving device are provided for selectively reducing display resolution of a display panel, thereby decreasing display power consumption. The display panel comprises: gate lines (11) and data lines (12) disposed across to each other; at least one switching unit (13) connected between different gate lines (11), configured to control whether at least two rows of gate lines (11) are conducted; and a driving control module (14) having first output terminals (141) connected one by one to control terminals of the at least one switching unit (13) and second output terminals (142) connected one by one to input terminals of the data lines (12); wherein the driving control module (14) outputs, via the first output terminals (141), a control signal for controlling whether a corresponding switching unit (13) is switched on, and decides, based on an on/off state of the switching unit (13), whether to output an image signal to a corresponding data line (12) via the second output terminals (142).

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