WO2017190429A1 - 伽马参考电压产生电路以及显示器 - Google Patents

伽马参考电压产生电路以及显示器 Download PDF

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Publication number
WO2017190429A1
WO2017190429A1 PCT/CN2016/089752 CN2016089752W WO2017190429A1 WO 2017190429 A1 WO2017190429 A1 WO 2017190429A1 CN 2016089752 W CN2016089752 W CN 2016089752W WO 2017190429 A1 WO2017190429 A1 WO 2017190429A1
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Prior art keywords
reference voltage
voltage generating
gamma reference
display
generating circuit
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PCT/CN2016/089752
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English (en)
French (fr)
Inventor
黄笑宇
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深圳市华星光电技术有限公司
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Priority to US15/305,345 priority Critical patent/US10152934B2/en
Publication of WO2017190429A1 publication Critical patent/WO2017190429A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve

Definitions

  • the present invention relates to the field of displays, and more particularly to a gamma reference voltage generating circuit and a display including the gamma reference voltage generating circuit.
  • the display is an indispensable component of electronic products, and the types of displays include cathode ray tube displays, liquid crystal displays, and light emitting diode displays.
  • TFT-LCD thin film transistor liquid crystal display
  • LCD liquid crystal display
  • the display panel of the liquid crystal display needs to obtain a gamma reference voltage from the outside to display an image, and each gamma reference voltage corresponds to a gray scale.
  • the liquid crystals in each sub-pixel of the liquid crystal panel are respectively driven to rotate by gray scale voltages of different sizes, thereby determining the transmittance (ie, brightness) of each sub-pixel by the rotation angle of the liquid crystal molecules to achieve gray scale display. And the purpose of visualization.
  • the existing gamma reference voltage generates multiple sets of gamma reference voltages through resistors disposed on a printed circuit board (PCB) or through a programmable gamma generating chip, and multiple sets of gamma reference voltages pass through the source side flip chip (S -COF) is connected to the display area of the display after being routed through the fan-out area of the display.
  • PCB printed circuit board
  • S -COF source side flip chip
  • the existing gamma reference voltage generating circuit requires a programmable gamma generating chip or a large number of voltage dividing resistors, which requires a large PCB space and consumes a large amount of component costs and parts cost, resulting in an increase in manufacturing cost of the display. .
  • exemplary embodiments of the present invention provide a gamma reference voltage generating circuit and a display capable of reducing cost, saving PCB space.
  • a gamma reference voltage generating circuit includes a reference voltage generating unit and a plurality of resistor units, the reference voltage generating unit being disposed on the printed circuit board, the plurality of resistor units receiving the reference voltage from the reference voltage generating unit and outputting the first gamma reference voltage,
  • the plurality of resistance units are formed on a region separate from the printed circuit board.
  • the gamma voltage generating circuit may include an amplifying unit disposed on the printed circuit board and amplifying the first gamma reference voltage to enhance signal driving capability, and outputting a second gamma reference voltage .
  • the area is a fan-out area of a display panel of the display.
  • each of the plurality of resistance units is a single resistor.
  • a signal output terminal is disposed between each two adjacent resistance units of the plurality of resistance units for outputting the first gamma reference voltage.
  • the plurality of resistor units are formed by a metal layer and a semiconductor layer of the fan-out region.
  • the first gamma reference voltage or the second gamma reference voltage is electrically connected to the display area of the display panel of the display through the source side flip chip.
  • the display is a thin film transistor liquid crystal display.
  • a display comprising the gamma reference voltage generating circuit described above.
  • a display including a display panel and a printed circuit board connected to the display panel, the display panel including a display area and a fan-out area, and the fan-out area may form a plurality of a resistor unit, the plurality of resistor units can receive a reference voltage provided by the printed circuit board to output a gamma reference voltage.
  • the gamma reference voltage generating circuit makes full use of the fan-out area of the display panel, thereby reducing the space occupied by the resistor on the printed circuit board. Furthermore, the display according to an embodiment of the present invention reduces the manufacturing cost.
  • FIG. 1 and 2 are block diagrams of a conventional gamma reference voltage generating circuit
  • 3 and 4 are block diagrams illustrating a gamma reference voltage generating circuit according to an exemplary embodiment of the present invention
  • FIG. 5 is a block diagram showing a gamma reference voltage generating circuit according to another exemplary embodiment of the present invention.
  • the gamma reference voltage generating circuit is mainly used to generate a gamma reference voltage for driving the display.
  • a conventional gamma reference voltage generating circuit will be described below with reference to FIGS. 1 and 2.
  • 1 and 2 are block diagrams of a conventional gamma reference voltage generating circuit.
  • the gamma reference voltage generating circuit 100 illustrated in FIG. 1 includes a reference voltage generating unit 110 and a voltage converting unit 120 disposed on a PCB.
  • the reference voltage generating unit 110 supplies the reference voltage Vref to the voltage converting unit, and the reference voltage Vref is converted by the voltage converting unit 120 to output a plurality of sets of gamma reference voltages gamma1, gamma2, ... gammaN-1 and gammaN (N is usually 18) Or 14).
  • a plurality of sets of gamma reference voltages are respectively supplied to a display area of a display panel of a display (eg, a TFT-LCD) via a display, thereby driving liquid crystals of each sub-pixel of the display panel with grayscale voltages of different sizes.
  • a display panel of a display eg, a TFT-LCD
  • a plurality of sets of gamma reference voltages gamma1, gamma2, ... gammaN-1, and gammaN generated by the gamma reference voltage generating circuit 100 disposed on the PCB 200 pass through the S-COF.
  • the display panel is connected to the display area of the display panel after being routed through the fan-out area of the display panel, so that each sub-pixel of the display area obtains the required power and signal.
  • the voltage conversion unit 120 shown in FIG. 1 is usually a plurality of voltage dividing resistors or programmable gamma generating chips disposed on a PCB.
  • the voltage dividing resistor is formed by using a region other than the printed circuit board, thereby reducing the space occupied by the PCB and reducing the manufacturing cost.
  • a gamma reference voltage generating circuit and a display including the gamma reference voltage generating circuit according to an embodiment of the present invention will be described in detail below with reference to FIGS. 3 through 6.
  • 3 and 4 are block diagrams illustrating a gamma reference voltage generating circuit according to an exemplary embodiment of the present invention.
  • the gamma reference voltage generating circuit 300 includes a reference voltage generating unit 310, a resistance unit 320, and an amplifying unit 330.
  • the reference voltage generating unit 310 and the amplifying unit 330 are disposed on the PCB, and the resistive unit 320 is formed on a region separate from the PCB.
  • the resistor unit 320 may be multiple for dividing the reference voltage to output a gamma reference voltage; the amplifying unit 330 is configured to increase the driving capability of the gamma reference voltage signal, and may be a gamma buffer .
  • the plurality of resistance units receive the reference voltage from the reference voltage generating unit 310, and output the first gamma reference voltages gamma1, gamma2, ... gammaN-1 and gammaN, and the first gamma reference voltage is buffered by the gamma buffer to output the second gamma Horse reference voltages Gamma1, Gamma2...GammaN-1 and GammaN.
  • the second gamma reference voltage is supplied to a display area of the display panel of the display, respectively.
  • the resistance unit is formed on the fan-out area of the display panel separate from the PCB, and the reference voltage Vref supplied from the reference voltage generating unit is supplied with the plurality of resistance units.
  • the reference voltage Vref is connected to one end of the plurality of resistance units, and the other end of the plurality of resistance units is grounded (GND is 0V), and an output end is provided between each of the two adjacent resistance units of the plurality of resistance units.
  • the first gamma reference voltages gamma1, gamma2, ... gammaN-1 and gammaN are output.
  • each of the plurality of resistance units is a single resistor, and the individual resistors are connected in series to form a plurality of resistor units.
  • the respective first gamma reference voltages required can be obtained by adjusting the resistance values of the resistance units. And outputting the second gamma reference voltages Gamma1, Gamma2, The COF is output to the display area (for example, by being routed to the display area after being routed in the fan-out area), thereby driving the display panel to display an image.
  • FIG. 5 is a block diagram showing a gamma reference voltage generating circuit according to another exemplary embodiment of the present invention.
  • the gamma reference voltage generating circuit shown in FIG. 5 includes all the components except the gamma buffer shown in FIG. As shown in FIG. 5, if the first gamma reference voltage divided by the plurality of resistance units has sufficient thrust (ie, driving capability), the amplification unit (for example, a gamma buffer) may be omitted. That is, the first gamma reference voltage outputted after being divided by the plurality of resistance units can be electrically connected to the display area of the display panel through the S-COF.
  • the amplification unit for example, a gamma buffer
  • the plurality of resistance units described above with reference to FIGS. 3 to 5 are formed on a fan-out area of the display panel separate from the PCB.
  • the ARRAY process can be used to form a plurality of resistor units in the metal layer and the semiconductor layer on the fan-out region to form a voltage dividing resistor that divides the reference voltage generated by the reference voltage generating circuit on the PCB, thereby outputting multiple groups. Gamma reference voltage.
  • the gamma reference voltage generating circuit according to an embodiment of the present invention makes full use of the fan-out area of the display panel, thereby reducing the space occupied by the resistor on the PCB.
  • the gamma reference voltage generating circuit according to an embodiment of the present invention reduces component costs and parts cost, and saves the cost of manufacturing the circuit.
  • a display according to an embodiment of the present invention may include a gamma reference voltage generating circuit as described above.
  • the display according to an embodiment of the present invention may include a printed circuit board (eg, a main board) and a display panel, and the display panel may include a display area and a non-display area (eg, a fan-out area), and a fan-out area on the non-display area Corresponding to the data driver, and having a metal layer and a semiconductor layer.
  • the metal layer and the semiconductor layer may be formed into a plurality of resistance units as described in FIGS. 3 to 5 by an ARRAY process, and the plurality of resistance units receive a reference voltage supplied from the printed circuit board, thereby outputting a gamma reference voltage.
  • a display according to an embodiment of the present invention forms a voltage dividing resistor using a region separate from a printed circuit board, reducing the cost of manufacturing the display.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

公开了一种伽马参考电压产生电路以及显示器，该伽马参考电压产生电路包括参考电压产生单元和多个电阻单元（R1，R2，……Rn，Rn+1），参考电压产生单元设置在印刷电路板上，多个电阻单元（R1，R2，……Rn，Rn+1）从参考电压产生单元接收参考电压并输出第一伽马参考电压，多个电阻单元（R1，R2，……Rn，Rn+1）形成在与印刷电路板分开的区域上。利用伽马参考电压产生电路与印刷电路板分开的区域形成电阻单元（R1，R2，……Rn，Rn+1），减小印刷电路板的占用空间，节约制造成本。

Description

伽马参考电压产生电路以及显示器 技术领域
本发明涉及显示器领域，更具体地说，涉及一种伽马参考电压产生电路以及包括该伽马参考电压产生电路的显示器。
背景技术
显示器是电子产品必不可少的组成部分，显示器的种类包括阴极射线管显示器、液晶显示器、发光二极管显示器等。
以液晶显示器中的薄膜晶体管液晶显示器(TFT-LCD)为例，TFT-LCD凭借其对比度高、层次感强、颜色鲜艳的特点，已经成为当前显示器的主要类型，并逐步成为现代IT、视讯产品中重要的显示方式。
液晶显示器的显示面板需要从外界获得伽马参考电压来显示图像，每一伽马参考电压对应一介灰阶。分别以不同大小的灰阶电压驱动该液晶面板的每一个子像素内的液晶进行旋转，从而通过液晶分子的旋转角度来决定各个子像素的透光率(即，亮度)，以达到灰阶显示和显像的目的。
现有的伽马参考电压通过设置在印刷电路板(PCB)上的电阻或者通过可编程伽马产生芯片来产生多组伽马参考电压，多组伽马参考电压通过源侧覆晶膜(S-COF)经显示器的扇出区走线后，与显示器的显示区连接。
然而，现有的伽马参考电压产生电路需要可编程伽马产生芯片或者大量的分压电阻，这需要占用较大的PCB空间并消耗大量元件费用和打件费用，从而导致显示器的制造成本提高。
发明内容
为克服现有技术的不足，本发明的示例性实施例提供一种能够降低成本、节约PCB空间的伽马参考电压产生电路以及显示器。
根据本发明的一方面，提供一种伽马参考电压产生电路，所述伽马参考电 压产生电路包括参考电压产生单元和多个电阻单元，所述参考电压产生单元设置在印刷电路板上，所述多个电阻单元从参考电压产生单元接收参考电压并输出第一伽马参考电压，所述多个电阻单元形成在与印刷电路板分开的区域上。
可选地，所述伽马电压产生电路可包括放大单元，所述放大单元设置在印刷电路板上并对第一伽马参考电压进行放大以增强信号驱动能力，并输出第二伽马参考电压。
可选地，所述区域为显示器的显示面板的扇出区。
可选地，所述多个电阻单元中的每个电阻单元为单个电阻。
可选地，所述多个电阻单元的每两个相邻的电阻单元之间具有信号输出端，用于输出所述第一伽马参考电压。
可选地，所述多个电阻单元通过所述扇出区的金属层和半导体层形成。
可选地，所述第一伽马参考电压或第二伽马参考电压通过源侧覆晶膜电连接到显示器的显示面板的显示区。
可选地，所述显示器为薄膜晶体管液晶显示器。
根据本发明的另一方面，提供一种显示器，所述显示器包括上述伽马参考电压产生电路。
根据本发明的另一方面，提供一种显示器，所述显示器包括显示面板和与显示面板连接的印刷电路板，所述显示面板包括显示区和扇出区，所述扇出区可形成多个电阻单元，所述多个电阻单元可接收印刷电路板提供的参考电压，以输出伽马参考电压。
根据本发明的实施例的伽马参考电压产生电路充分利用显示面板的扇出区，从而减小电阻在印刷电路板上占用的空间。此外，根据本发明的实施例的显示器降低了制造成本。
附图说明
通过下面结合附图进行的对实施例的描述，本发明的上述和/或其它目的和 优点将会变得更加清楚，其中：
图1和图2是现有的伽马参考电压产生电路的框图；
图3和图4是示出根据本发明示例性实施例的伽马参考电压产生电路的框图；
图5是示出根据本发明的另一示例性实施例的伽马参考电压产生电路的框图。
具体实施方式
现将详细描述本发明的示例性实施例，所述实施例的示例在附图中示出，其中，相同的标号指示相同的部分。以下将通过参照附图来说明所述实施例，以便解释本发明。
伽马参考电压产生电路主要用于产生驱动显示器的伽马参考电压。下面将参照图1和图2描述现有的伽马参考电压产生电路。
图1和图2是现有的伽马参考电压产生电路的框图。
参照图1，图1中示出的伽马参考电压产生电路100包括设置在PCB上的参考电压产生单元110和电压转换单元120。参考电压产生单元110向电压转换单元提供参考电压Vref，参考电压Vref经电压转换单元120转换后输出多组伽马参考电压gamma1、gamma2......gammaN-1和gammaN(N通常为18或14)。
多组伽马参考电压经显示器被分别提供至显示器(例如，TFT-LCD)的显示面板的显示区，从而以不同大小的灰阶电压驱动显示面板的每一个子像素的液晶。
具体而言，如图2所示，由设置在PCB 200上的伽马参考电压产生电路100产生的多组伽马参考电压gamma1、gamma2......gammaN-1和gammaN通过S-COF与显示面板连接，经显示面板的扇出区走线后与显示面板的显示区连接，从而使显示区的每个子像素获得所需的电力和信号。
图1中示出的电压转换单元120通常为设置在PCB上的多个分压电阻或者可编程伽马产生芯片，所需参考电压越多，所需分压电阻越多，所占用PCB的空间越大，元器件费用和打件费用越高，由此导致显示器的制造成本升高。
根据本发明的实施例，通过利用印刷电路板之外的区域形成分压电阻，从而减小占用PCB的空间、降低制造成本。
以下将参照图3至图6详细描述根据本发明的实施例的伽马参考电压产生电路和包括该伽马参考电压产生电路的显示器。
图3和图4是示出根据本发明示例性实施例的伽马参考电压产生电路的框图。
如图3所示，根据本发明的实施例的伽马参考电压产生电路300包括参考电压产生单元310、电阻单元320和放大单元330。参考电压产生单元310和放大单元330设置在PCB上，电阻单元320形成在与PCB分开的区域上。可选地，电阻单元320可以为多个，用于对参考电压进行分压，以输出伽马参考电压；放大单元330用于提高伽马参考电压信号的驱动能力，并且可以为伽马缓冲器。多个电阻单元从参考电压产生单元310接收参考电压，并输出第一伽马参考电压gamma1、gamma2……gammaN-1和gammaN，第一伽马参考电压经伽马缓冲器缓冲后输出第二伽马参考电压Gamma1、Gamma2......GammaN-1和GammaN。第二伽马参考电压被分别提供至显示器的显示面板的显示区。
具体而言，如图4所示，电阻单元形成在与PCB分开的显示面板的扇出区上，参考电压产生单元提供的参考电压Vref被提供所述多个电阻单元。可选地，参考电压Vref连接到多个电阻单元的一端，多个电阻单元的另一端接地(GND为0V)，多个电阻单元中每两个相邻的电阻单元之间具有输出端，用于输出第一伽马参考电压gamma1、gamma2……gammaN-1和gammaN。优选地，多个电阻单元中的每个电阻单元为单个电阻，这些单个电阻串联连接形成多个电阻单元。
根据电阻单元的分压原理可得：
Figure PCTCN2016089752-appb-000001
Figure PCTCN2016089752-appb-000002
通过调整电阻单元的电阻值即可获得所需的各个第一伽马参考电压。所述多个第一伽马参考电压经伽马缓冲器缓冲后，输出驱动能力增强的第二伽马参考电压Gamma1、Gamma2、…、GammaN-1和GammaN，第二伽马参考电压通过S-COF输出到显示区(例如，通过在扇出区布线后传输到显示区)，从而驱动显示面板显示图像。
图5是示出根据本发明的另一示例性实施例的伽马参考电压产生电路的框图。
图5中示出的伽马参考电压产生电路包括图4中示出的除了伽马缓冲器之外的所有部件。如图5所示，经多个电阻单元分压后的第一伽马参考电压如果具有足够的推力(即，驱动能力)，则可省略放大单元(例如，伽马缓冲器)。即，经过多个电阻单元分压后输出的第一伽马参考电压可通过S-COF电连接到显示面板的显示区。
优选地，上面参照图3至图5描述的多个电阻单元形成在与PCB分开的显示面板的扇出区上。例如，可利用ARRAY制程使扇出区上的金属层和半导体层形成多个电阻单元，以形成对由PCB上的参考电压产生电路产生的参考电压进行分压的分压电阻，从而输出多组伽马参考电压。
根据本发明的实施例的伽马参考电压产生电路充分利用显示面板的扇出区，从而降低电阻在PCB上占用的空间。根据本发明的实施例的伽马参考电压产生电路减小元器件费用和打件费用，节约制造电路的成本。
根据本发明的实施例的显示器可包括如上所述的伽马参考电压产生电路。另外，根据本发明的实施例的显示器可包括印刷电路板(例如，主板)和显示面板，显示面板可包括显示区和非显示区(例如，扇出区)，非显示区上的扇出区对应数据驱动器，并且具有金属层和半导体层。可利用ARRAY制程使金属层和半导体层形成图3至图5中所述的多个电阻单元，多个电阻单元接收印刷电路板提供的参考电压，从而输出伽马参考电压。根据本发明的实施例的显示器利用与印刷电路板分开的区域形成分压电阻，降低制造显示器的成本。
以上所述仅为本发明的优选实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员可以组合或拆分本发明的技术方案，从而获得合适的结果，在本发明揭露的技术范围内容易想到的改变或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (11)

  1. 一种伽马参考电压产生电路，包括参考电压产生单元和多个电阻单元，所述参考电压产生单元设置在印刷电路板上，所述多个电阻单元从参考电压产生单元接收参考电压并输出第一伽马参考电压，其中：所述多个电阻单元形成在与印刷电路板分开的区域上。
  2. 根据权利要求1所述的伽马参考电压产生电路，还包括放大单元，所述放大单元设置在印刷电路板上并对第一伽马参考电压进行放大以增强信号驱动能力，并输出第二伽马参考电压。
  3. 根据权利要求1所述的伽马参考电压产生电路，其中，所述区域为显示器的显示面板的扇出区。
  4. 根据权利要求2所述的伽马参考电压产生电路，其中，所述区域为显示器的显示面板的扇出区。
  5. 根据权利要求3所述的伽马参考电压产生电路，其中，所述多个电阻单元中的每个电阻单元为单个电阻。
  6. 根据权利要求5所述的伽马参考电压产生电路，其中，所述多个电阻单元的每两个相邻的电阻单元之间具有信号输出端，用于输出所述第一伽马参考电压。
  7. 根据权利要求3所述的伽马参考电压产生电路，其中，所述多个电阻单元通过所述扇出区的金属层和半导体层形成。
  8. 根据权利要求3所述的伽马参考电压产生电路，其中，所述第一伽马参考电压或第二伽马参考电压通过源侧覆晶膜电连接到显示器的显示面板的显示区。
  9. 根据权利要求3所述的伽马参考电压产生电路，其中，所述显示器为薄膜晶体管液晶显示器。
  10. 一种显示器，包括伽马参考电压产生电路,所述伽马参考电压产生电路，包括参考电压产生单元和多个电阻单元，所述参考电压产生单元设置在印 刷电路板上，所述多个电阻单元从参考电压产生单元接收参考电压并输出第一伽马参考电压，其中：所述多个电阻单元形成在与印刷电路板分开的区域上。
  11. 一种显示器，包括显示面板和与显示面板连接的印刷电路板，所述显示面板包括显示区和扇出区，其中，所述扇出区形成多个电阻单元，所述多个电阻单元接收印刷电路板提供的参考电压，以输出伽马参考电压。
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