Calibration device, display chip and display

A technology for calibrating devices and comparators, which is applied in the field of circuits and can solve problems such as complex pixel structures

Active Publication Date: 2022-01-11
BRIGATES MICROELECTRONICS KUNSHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The problem solved by the present invention is: the pixel structure

Method used

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  • Calibration device, display chip and display
  • Calibration device, display chip and display
  • Calibration device, display chip and display

Examples

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Example Embodiment

[0028] In order to make the above objects, features, and advantages of the present invention, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] like figure 2 Shown embodiment the present invention provides a calibration device, adapted to the at least one pixel unit 11 is coupled. The pixel selection unit 11 is adapted to receive the reference signal WR and the write voltage Vw1, and the selection signal WR is active level, to provide an initial output voltage Vout1 writing based on the reference voltage Vw1.

[0030] The calibration apparatus comprising: a conversion unit 12. A difference between a first voltage conversion unit 12 may obtain the reference voltage Vref and the initial output voltage Voutl, the first voltage difference and analog to digital conversion to obtain a difference value is quantized, the quantized difference value the pixel unit provides an initial output voltage Vout1...

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Abstract

The invention provides a calibration device, a display chip and a display, the calibration device is suitable for being coupled with at least one pixel unit, and the pixel unit is suitable for receiving a selection signal and a reference write-in voltage and providing an initial output voltage based on the reference write-in voltage when the selection signal is an effective level. The calibration device comprises an analog-to-digital conversion unit which is suitable for obtaining a first voltage difference value between a reference voltage and an initial output voltage and performing analog-to-digital conversion on the first voltage difference value to obtain a difference value quantized value, and the difference value quantized value corresponds to a pixel unit providing the initial output voltage.

Description

technical field [0001] The invention relates to the field of circuits, in particular to a calibration device, a display chip and a display. Background technique [0002] Silicon-based organic light-emitting display (OLED on silicon) is different from traditional organic light-emitting diode (Organic Light-Emitting Diode, OLED) display, which is a display designed based on a silicon wafer (chip). Its pixel size is much smaller than traditional OLED, and its main application fields are VR, AR and other fields. [0003] In the field of micro OLED (OLED on Silicon), maintaining the consistency of the response of each pixel unit is a key technical indicator. Good consistency will improve the display effect of the display. There are mandatory indicator requirements. [0004] figure 1 It is a traditional AM-OLED 2T1C (2 transistors and 1 capacitor) driving circuit structure, which is used to drive the light-emitting diode D1 in the pixel unit. The structure includes a switch tu...

Claims

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Application Information

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IPC IPC(8): G09G3/3208
CPCG09G3/3208
Inventor 罗文哲张琦
Owner BRIGATES MICROELECTRONICS KUNSHAN
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