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Display device

A display device and voltage technology, applied to static indicators, instruments, etc., can solve problems affecting the service life of the device, insufficient charging of sub-pixels, aging of thin-film transistors, etc., to prevent display from dimming, reduce channel resistance, and ensure brightness consistent effect

Active Publication Date: 2019-10-11
HKC CORP LTD +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] However, with long-term use, the thin film transistors inside the display device will gradually age
This causes the sub-pixels it displays to be undercharged, thus causing a darker display and affecting the lifespan of the device

Method used

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Embodiment Construction

[0052] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0053] In one embodiment, refer to figure 1 as well as figure 2, the display device includes a power chip 100 , a gamma chip 200 , and a display panel 300 . The power chip 100 outputs a gate-on voltage VG. The gamma chip 200 outputs gamma voltages.

[0054] The display panel 300 includes a plurality of sub-pixels 310 of various colors, such as red sub-pixels R, green sub-pixels G and blue sub-pixels B. As shown in FIG. Meanwhile, the display panel 300 further includes a plurality of driving transistors 320 for driving each sub-pixel 310 . The drive transistor 320 is ...

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Abstract

The present application relates to a display device comprising: a power supply chip for outputting a gate turn-on voltage; a gamma chip which is used for providing gamma voltage; a detection resistorwhich is provided with a first end and a second end which are used for electrical connection, wherein the first end is grounded; a display panel which comprises a plurality of sub-pixels, a pluralityof driving transistors and at least one detection transistor, wherein the grid electrodes of the driving transistors receive a grid electrode turn-on voltage, the first electrodes of the driving transistors receive a gamma voltage, and the second electrodes of the driving transistors are electrically connected with the corresponding sub-pixels, the grid electrode of the detection transistor receives a grid electrode turn-on voltage, the first electrode of the detection transistor receives a test voltage, and the second electrode of the detection transistor is electrically connected with the second end of the detection resistor; and a control module which is electrically connected with the second end of the detection resistor and is used for controlling the power supply chip to increase ordecrease the output of the gate turn-on voltage when the voltage of the detection resistor is decreased. The display device can effectively prevent display darkening after long-term use.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a display device. Background technique [0002] With the development of display technology, various display devices (for example, liquid crystal televisions) are used in people's production and life to provide convenience for people. Each imaging sub-pixel of a display device is usually driven by a thin film transistor (Thin Film Transistor, TFT). TFT display devices have the advantages of high responsiveness, high brightness, high contrast, etc., and thus become the current mainstream display devices. [0003] However, with long-term use, the thin film transistors inside the display device will gradually age. This will lead to insufficient charging of the sub-pixels for display, thus causing a problem of dim display, which in turn affects the service life of the device. Contents of the invention [0004] Based on this, it is necessary to address the above technic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3648G09G2320/046G09G3/3677G09G3/3696G09G2320/045G09G2330/12G09G3/3688G09G2320/0276
Inventor 王明良
Owner HKC CORP LTD
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