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display device

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

Active Publication Date: 2020-12-08
HKC CORP LTD +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

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, which includes: a power supply chip for outputting a gate-on voltage; a gamma chip for providing a gamma voltage; a detection resistor with a first end and a second end for electrical connection , the first end is grounded; the display panel includes a plurality of sub-pixels, a plurality of driving transistors, and at least one detection transistor; the gate of the driving transistor receives the gate-on voltage, the first electrode of the driving transistor receives the gamma voltage, and the driving transistor The second pole is electrically connected to the corresponding sub-pixel; the gate of the detection transistor receives the gate open voltage, the first pole of the detection transistor receives a test voltage, and the second pole of the detection transistor is electrically connected to the second end of the detection resistor; The control module is electrically connected to the second end of the detection resistor, and is used for controlling the output of the power chip to increase or decrease the gate open voltage when the voltage of the detection resistor decreases. The display device of the present application can effectively prevent the display from becoming dark 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 Patents(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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