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Display panel, source driver and operational amplifier

A technology of an operational amplifier and a differential amplifier circuit, which is applied to static indicators, instruments, etc., can solve the problems of shrinking the size of the surrounding area of ​​the display device, increasing the area of ​​the source driver 20, and increasing the complexity of the manufacturing process, so as to reduce the complexity As well as the preparation cost, the effect of improving the display effect and reducing the deformation

Active Publication Date: 2019-03-12
EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] However, adding too many dummy transistors will obviously increase the area occupied by the source driver 20, which is not conducive to the reduction of the volume of the peripheral area of ​​the display device, and affects the thinning of the display device.
At the same time, additionally setting too many dummy transistors will also increase the complexity of the manufacturing process of the display device and increase the manufacturing cost

Method used

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  • Display panel, source driver and operational amplifier
  • Display panel, source driver and operational amplifier
  • Display panel, source driver and operational amplifier

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Embodiment Construction

[0075] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments. communicated to those skilled in the art. In the drawings, the same reference numerals denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0076] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practi...

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Abstract

The invention provides a display panel, a source driver and an operational amplifier. The operational amplifier comprises a first differential amplifying circuit and a second differential amplifying circuit. The first differential amplifying circuit comprises first and third N-type transistors, wherein the third N-type transistor is arranged adjacent to a second N-type transistor and serves as a virtual transistor of the second N-type transistor. The second differential amplifying circuit comprises first, second and third P-type transistors, wherein the third P-type transistor is arranged adjacent to the first P-type transistor and serves as a virtual transistor of the first P-type transistor. The operational amplifier can reduce the area occupied by the source driver.

Description

technical field [0001] The present disclosure relates to the field of display technology, in particular to an operational amplifier, a source driver and a display panel. Background technique [0002] With the development of optical technology and semiconductor technology, display devices such as liquid crystal display (LCD), organic light emitting diode display (OLED) and electronic paper display (EPD) have been widely used in various electronic products. Among them, due to the advantages of high image quality, small size, light weight, thin thickness, low voltage driving and low power consumption, OLED displays have become one of the mainstream display devices at present. [0003] figure 1 It is a schematic structural diagram of an OLED display in the prior art. The OLED display includes a display area AA, a gate driver 10 , a source driver 20 and other components. The display area AA includes multiple rows of scan lines SL, multiple columns of data lines DL and multiple...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3208
Inventor 许进富
Owner EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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