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Driver chips and display products for driving display panels

A technology for driving chips and display panels, applied to static indicators, instruments, etc., can solve the problems of large power loss, power consumption, multiple power losses, etc., and achieve the effect of reducing and improving power consumption

Active Publication Date: 2020-11-06
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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Problems solved by technology

The operational amplifier OP itself has power consumption. If the voltage difference between the positive voltage source and the negative voltage source of the operational amplifier OP is greater, the power loss will be greater.
However, the existing gamma voltage divider circuit provides a fixed power supply to each operational amplifier OP, so when outputting low gray scale voltage, the corresponding operational amplifier OP will have more power consumption

Method used

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  • Driver chips and display products for driving display panels
  • Driver chips and display products for driving display panels
  • Driver chips and display products for driving display panels

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Embodiment Construction

[0029] In order to make the purpose, technical solution and effect of the present application more clear and definite, the present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present application, and the word "embodiment" used in the description of the present application is intended to be used as an example, illustration or illustration, and is not intended to limit the present application.

[0030] figure 2 A schematic diagram showing a driver chip for a display panel according to the present application, image 3 A schematic diagram showing the voltage configuration of the driver chip according to the present application, Figure 4 A schematic diagram of a gamma voltage divider circuit according to the present application is shown.

[0031] Please also refer to Figures 2 to 4 The driving chip 10 is used to...

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Abstract

A driving chip (10) for driving a display panel, and a display product. The driving chip (10) comprises a gamma voltage division circuit (30). The gamma voltage division circuit (30) comprises: a voltage division resistor string (Rs) which is formed by a plurality of voltage division resistors (rP) being connected in series and is used for generating a plurality of binding point gray-scale voltages (VBPi); a plurality of operational amplifier (301), wherein each operational amplifier (301) is provided on an output channel of each binding point gray-scale voltage (VBPi), each operational amplifier (301) is provided with a positive power supply end for receiving a first voltage and a negative power supply end for receiving a second voltage, and the first voltage is greater than the second voltage; a low-voltage stabilized voltage source (GVEE), providing a fixed second voltage for the negative power supply end of each operational amplifier (301); and a digital-to-analog converter (302), providing a first voltage for the positive power supply end of each operational amplifier (301), wherein the first voltage provided by the digital-to-analog converter (302) is dynamically adjusted according to a gray scale or a data voltage to be input to the display panel, reducing the power consumption of the driving chip (10).

Description

technical field [0001] The present application relates to a display technology, in particular to a driver chip and a display product for driving a display panel. Background technique [0002] With the rapid development of display technology, active-matrix organic light-emitting diode (active-matrix organic light-emitting diode, AMOLED) mobile phone products, virtual reality (virtual reality, VR), augmented reality (augmented reality, AR) products are also being used More and more consumers accept it. With the increase in the display size of AMOLED products, as well as the growth of mobile payment technology and people's entertainment and game needs, people are increasingly inseparable from the use of these products. Users have higher and higher requirements on the battery life of display products, especially portable display products (such as AMOLED products). Reducing the power consumption of display products is an important subject in this technical field. [0003] Taki...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3291G09G3/3225G09G3/36
CPCG09G3/3225G09G3/3291G09G3/3688G09G2330/021
Inventor 鞠锐
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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