Chunghwa Picture Tubes Ltd.

Chunghwa, Taiwan

Chunghwa Picture Tubes Ltd.

Chunghwa, Taiwan
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Patent
Chunghwa Picture Tubes LTD. | Date: 2016-03-18

A display device and a method of driving a display panel. The display device includes a color calculating unit, a color data converting unit, a display and a panel driving unit. The color calculating unit supplies a first, a second, a third, and a fourth color data to the color data converting unit according to an image data. The color data converting unit outputs a first, a second, a third, and a fourth display data to the panel driving unit. A panel driving unit outputs a first, a second, and a third pixel voltages according to a first gamma curve to drive a first, a second, and a third color pixels of the display panel, and outputs a fourth pixel voltage according to a second gamma curve to drive a fourth color pixel of the display panel, wherein the first gamma curve is different from the second gamma curve.


Patent
Chunghwa Picture Tubes Ltd. | Date: 2016-05-25

A pixel structure of a liquid crystal display panel includes a substrate, a switch device, a pixel electrode, an insulating layer, and a patterned common electrode. The switch device and the pixel electrode are disposed on the substrate, and the switch device is electrically connected to the pixel electrode. The insulating layer is disposed on the substrate and covers the switch device and the pixel electrode, wherein the insulating layer includes a plurality of trenches. The patterned common electrode is disposed on the insulating layer and does not cover the trenches. The pixel structure of the liquid crystal display panel and related manufacturing method are able to enhance the driving effect of the liquid crystal molecules, reduce the driving voltage and increase alignment performance of the alignment film.


Patent
Chunghwa Picture Tubes LTD. | Date: 2016-03-10

A method of manufacturing a pixel structure is provided. A gate and a gate insulating layer are formed on a substrate. A channel layer is formed on the gate insulating layer, and the material of the channel layer includes a first metal oxide semiconductor material. A source and a drain are formed on opposite sides of the channel layer. An insulating layer has an opening exposing the drain. First and second transparent electrode material layers are formed on the substrate sequentially, the material of the first transparent electrode material layer includes a second metal oxide semiconductor material, and the material of the second transparent electrode material layer includes a metal oxide conductive material. The first and second transparent electrode material layers are patterned using the same mask to form first and second transparent electrode layers, wherein the first transparent electrode layer is in contact with the drain through the opening.


Patent
Chunghwa Picture Tubes Ltd. | Date: 2016-05-19

A manufacturing method of a metal oxide semiconductor thin film transistor is provided. The manufacturing method includes following steps. A gate, a gate insulating layer, a patterned metal oxide semiconductor layer and a conductive layer are formed on a substrate first. Next, a first patterned photoresist layer and two second patterned photoresist layers are formed on the conductive layer. Next, a first etching process is performed and the first patterned photoresist layer is then removed. Next, a second etching process is performed to form a source and a drain, and the second patterned photoresist layers are then removed. The source and the drain of the present invention are formed by performing two etching processes to different portions of the conductive layer respectively. Thus, the metal oxide semiconductor layer is prevented from being influenced by the processes of forming the source and the drain, and the process stability is maintained.


Patent
Chunghwa Picture Tubes LTD. | Date: 2015-11-05

A security system is provided. An unmanned flying vehicle is remotely controlled to collect an environment information of a target environment, and whether a prompt signal is outputted is determined according to an environment variation obtained by comparing the environment information with a reference environmental information.


An image adjusting method configured to adjust an original image on a transparent display device includes: adjusting a saturation level of the original image to generate a saturation optimization image; adjusting a contrast level of a first image associated with the saturation optimization image to generate a contrast optimization image; adjusting an exposure level of the contrast optimization image to generate an exposure optimization image; and adjusting a sharpness level of a second image associated with the exposure optimization image to generate an output image.


An aircraft three-dimensional exhibition system and aircraft three-dimensional exhibition controlling method is provided. The aircraft three-dimensional exhibition system includes an aircraft controller and a plurality of aircrafts. Each of aircrafts includes an effect presenting device, a communication device and a dynamic reaction device. The effect presenting device provides an audio-visual effect. The communication device receives a flight control signal from the aircraft controller. The dynamic reaction device controls the aircraft to fly along a flight track according to the flight control signal. The aircrafts fly in formation according to a flight script to form a whole formation audio-visual effect by the audio-visual effects provided by each of the aircrafts, for displaying changing stereoscopic audio-visual effects.


An organic light emitting diode (OLED) display apparatus includes a power circuit and a pixel. The power circuit serves to provide a first voltage. The pixel includes a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a capacitor, and an OLED. During a programming period, a first terminal of the capacitor receives a data voltage through the turned-on first transistor, a first terminal of the second transistor receives the first voltage, a control terminal of the second transistor is coupled to a second terminal of the capacitor and coupled to a second terminal of the second transistor through the turned-on third transistor, and the power circuit regulates a voltage level or a current of the first voltage to accelerate a voltage level of the control terminal of the second transistor to reach a target voltage.


Patent
Chunghwa Picture Tubes LTD. | Date: 2016-01-29

A transflective LCD panel includes a pixel array substrate, an opposite substrate, and a liquid crystal layer disposed between the pixel array substrate and the opposite substrate. The pixel array substrate includes a first substrate, pixel units, and reflective layers. Each pixel unit has a transmissive region and a reflective region, and the reflective layers are disposed in the reflective region. The opposite substrate is disposed above the pixel array substrate and includes a second substrate, a color filter layer, and light scattering layers. A thickness of the color filter layer is greater than a thickness of each light scattering layer. A first bottom surface of the color filter layer is aligned to a second bottom surface of each light scattering layer. The light scattering layers correspond to the reflective layers.


Patent
Chunghwa Picture Tubes Ltd. and Tatung University | Date: 2016-06-01

An optical film includes a first substrate and a second substrate. A plurality of first particles are doped and dispersed in the first substrate, and a plurality of second particles are doped and dispersed in the second substrate. The first substrate has a top surface and a bottom surface, wherein the top surface is a flat surface and the bottom surface is a rough surface. The second substrate is attached to the bottom surface of the first substrate and the second substrate has flat surfaces.

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