WO2019037286A1 - 透反式液晶显示装置 - Google Patents

透反式液晶显示装置 Download PDF

Info

Publication number
WO2019037286A1
WO2019037286A1 PCT/CN2017/111027 CN2017111027W WO2019037286A1 WO 2019037286 A1 WO2019037286 A1 WO 2019037286A1 CN 2017111027 W CN2017111027 W CN 2017111027W WO 2019037286 A1 WO2019037286 A1 WO 2019037286A1
Authority
WO
WIPO (PCT)
Prior art keywords
disposed
substrate
layer
liquid crystal
crystal display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/111027
Other languages
English (en)
French (fr)
Inventor
柳铭岗
林永伦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to US15/578,246 priority Critical patent/US20190064616A1/en
Publication of WO2019037286A1 publication Critical patent/WO2019037286A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133553—Reflecting elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136209—Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136222—Colour filters incorporated in the active matrix substrate

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular, to a transflective liquid crystal display device.
  • LCDs liquid crystal displays
  • Various consumer electronic products such as digital assistants, digital cameras, notebook computers, and desktop computers have become mainstream in display devices.
  • liquid crystal displays on the market are roughly classified into three types according to the requirements of light sources, transmissive liquid crystal displays, reflective liquid crystal displays, and transflective liquid crystal displays.
  • the transmissive liquid crystal display uses the backlight module on the back of the liquid crystal panel as a light source, and the light emitted by the backlight module passes through the transparent pixel electrode of the array substrate for display, and the transmissive liquid crystal display is suitable for use in a weak light source environment, such as When used outdoors, when the external light source is too strong, the intensity of the backlight will be disturbed by the external light, so that when the eye looks at the display, the panel will be too bright and unclear, affecting Image quality.
  • the long-term use of the backlight makes the power consumption very large, and the small-sized display is usually powered by a battery, so it is prone to a situation where there is no power at all.
  • the reflective liquid crystal display mainly uses a conventional light source or external natural light as a light source, and the array substrate is provided with a reflective electrode made of metal or other material having good reflective properties, and the reflected light reflects the light of the front light source or the external natural light to realize the screen display.
  • Liquid crystal displays are suitable for use in places where external light sources are strong. Displaying by reflecting natural light can reduce the energy consumption of the display. However, where the light source is weak, there is a phenomenon of insufficient light intensity, which affects image quality.
  • the transflective liquid crystal display panel can be regarded as a combination of a transmissive and reflective liquid crystal display panel.
  • a transmissive and reflective liquid crystal display panel On the array substrate, both a reflective area and a transmissive area are provided, and the backlight and the front light source or the external light source can be simultaneously used for performing. display.
  • the transmission mode is mainly used, that is, the backlight of the liquid crystal display itself is used to cause the liquid crystal display panel to display an image.
  • the reflection mode is mainly used, that is, the liquid crystal display panel is utilized.
  • the reflective electrode inside reflects the external natural light and displays the image as a light source. Therefore, the transflective liquid crystal display is suitable for external environments of various light intensities, especially excellent outdoor visibility, and the brightness of the backlight is not required. Very high, with low power consumption.
  • FIG. 1 is a schematic structural diagram of a transflective liquid crystal display device.
  • the liquid crystal display device includes an upper substrate 100' and a lower substrate 200' disposed opposite to each other, and a liquid crystal layer 300' disposed between the upper substrate 100' and the lower substrate 200', wherein the upper substrate 100' is a color filter substrate
  • the lower substrate 200' includes an array substrate 210', an insulating layer 220' disposed on the array substrate 210', and a reflective electrode 230' disposed on the insulating layer 220'.
  • the lower substrate 200' has a reflective area 201' and a transmissive area 202'.
  • the insulating layer 220' and the reflective electrode 230' correspond to the reflective area 201'.
  • the array substrate 210' is provided with a pixel electrode 211' in the transmissive area 202'.
  • the thickness of the region corresponding to the reflective region 201' in 300' is one-half the thickness of the region corresponding to the transmissive region 202'.
  • the transflective liquid crystal display device can perform transflective display, the transmittance of the liquid crystal display device is seriously affected by the presence of the reflective region 201', and the liquid crystal layer 300 needs to be realized by controlling the thickness of the insulating layer 220'.
  • the thickness of the 'reflecting region 201' is one-half of the thickness of the transmissive region 202', and the process complexity is difficult to achieve.
  • An object of the present invention is to provide a transflective liquid crystal display device capable of improving the brightness of a display screen when the external light intensity is large, and having a high transmittance, without introducing an additional insulating layer, and having a simple structure.
  • the present invention provides a transflective liquid crystal display device comprising: an upper substrate and a lower substrate disposed opposite to each other, and a liquid crystal layer disposed between the upper substrate and the lower substrate;
  • the lower substrate includes a first substrate, a TFT array layer disposed on the first substrate, a color resist layer disposed on the TFT array layer, a flat layer covering the color resist layer and the TFT array layer, and being disposed on the flat layer a BPS light shielding layer, a pixel electrode disposed on the flat layer, and a reflective electrode disposed on the BPS light shielding layer;
  • the BPS light shielding layer comprises a black matrix, a main spacer disposed on the black matrix and spaced apart from each other, and an auxiliary spacer; the reflective electrode is disposed on the black matrix, and the reflective electrode is connected to the pixel electrode ;
  • the distance between the reflective electrode and the upper substrate is equal to one-half of the distance between the pixel electrode and the upper substrate.
  • the lower substrate has a plurality of sub-pixels arranged in an array;
  • the color resist layer includes a plurality of color blocking blocks disposed corresponding to the plurality of sub-pixels, and the adjacent two rows of color blocking blocks are spaced apart, and the color resist layer further comprises a plurality of color-resisting bridges between two adjacent rows of color blocking blocks;
  • the black matrix of the BPS light-shielding layer covers an area between two adjacent rows of color block blocks, and the main spacers are correspondingly located above the color-resistance bridge.
  • the BPS light shielding layer is formed by photolithography of a BPS material layer formed on a flat layer by using a halftone mask.
  • the halftone mask is used to form a light transmittance of a region of the main spacer and is used to form an auxiliary spacer
  • the area of the mat has the same light transmittance.
  • the transflective liquid crystal display device further includes an upper polarizer disposed on a side of the upper substrate away from the lower substrate, and a lower polarizer disposed on a side of the lower substrate away from the upper substrate.
  • the optical axis of the upper polarizer is parallel to the optical axis of the lower polarizer.
  • the transflective liquid crystal display device further includes a backlight module disposed on a side of the lower polarizer away from the lower substrate.
  • the upper substrate includes a second substrate and a common electrode disposed on a side of the second substrate adjacent to the lower substrate.
  • the material of the reflective electrode is aluminum or silver.
  • the present invention also provides a transflective liquid crystal display device comprising: an upper substrate and a lower substrate disposed opposite to each other, and a liquid crystal layer disposed between the upper substrate and the lower substrate;
  • the lower substrate includes a first substrate, a TFT array layer disposed on the first substrate, a color resist layer disposed on the TFT array layer, a flat layer covering the color resist layer and the TFT array layer, and being disposed on the flat layer a BPS light shielding layer, a pixel electrode disposed on the flat layer, and a reflective electrode disposed on the BPS light shielding layer;
  • the BPS light shielding layer comprises a black matrix, a main spacer disposed on the black matrix and spaced apart from each other, and an auxiliary spacer; the reflective electrode is disposed on the black matrix, and the reflective electrode is connected to the pixel electrode ;
  • the distance between the reflective electrode and the upper substrate is equal to one-half of the distance between the pixel electrode and the upper substrate;
  • the lower substrate has a plurality of sub-pixels arranged in an array;
  • the color resist layer includes a plurality of color blocking blocks disposed corresponding to the plurality of sub-pixels, and the adjacent two rows of color blocking blocks are spaced apart, and the color resist layer further includes a plurality of color-resisting bridges disposed between two adjacent rows of color blocking blocks;
  • the black matrix of the BPS light shielding layer covers an area between adjacent two rows of color blocking blocks, and the main spacer is corresponding to the color blocking bridge;
  • the BPS light shielding layer is obtained by performing a photolithography process on a BPS material layer formed on the flat layer by using a halftone mask;
  • the light transmittance of the area in which the halftone mask is used to form the main spacer is the same as the light transmittance of the area for forming the auxiliary spacer;
  • the method further includes an upper polarizer disposed on a side of the upper substrate away from the lower substrate, and a lower polarizer disposed on a side of the lower substrate away from the upper substrate.
  • a transflective liquid crystal display device provided by the present invention adopts a COA and BPS design, and the reflective electrode is disposed on a black matrix of the BPS light shielding layer, and the reflective electrode is connected to the pixel electrode, thereby
  • the device forms a reflective region in a region corresponding to the reflective electrode, and a region corresponding to the pixel electrode forms a transmissive region, which can enhance the brightness of the display screen when the external light intensity is large.
  • Degree, and the reflection area does not occupy the area of the transmission area, and does not affect the transmittance of the device, and the thickness of the liquid crystal cell of the reflection area and the transmission area can be controlled by controlling the thickness of the black matrix without introducing an additional insulating layer, structure simple.
  • FIG. 1 is a schematic cross-sectional structural view of a conventional transflective liquid crystal display device
  • FIG. 2 is a cross-sectional structural view of a transflective liquid crystal display device of the present invention at a main spacer;
  • FIG. 3 is a cross-sectional structural view of a transflective liquid crystal display device of the present invention at a black matrix
  • FIG. 4 is a schematic plan view of a color resist layer of a transflective liquid crystal display device of the present invention.
  • FIG. 5 is a top plan view of a color resist layer and a BPS light shielding layer of a transflective liquid crystal display device of the present invention.
  • the invention provides a transflective liquid crystal display device, which adopts a technology of directly preparing a color filter layer on an array substrate (Color Filter on Array (COA), and utilizes a black photomask (BPS).
  • the transflective liquid crystal display device of the present invention comprises: an upper substrate 100 and a lower substrate 200 disposed opposite to each other, and a technique for simultaneously preparing a black matrix and a main and auxiliary spacers.
  • a liquid crystal layer 300 between the upper substrate 100 and the lower substrate 200 an upper polarizer 400 disposed on a side of the upper substrate 100 away from the lower substrate 200, a lower polarizer 500 disposed on a side of the lower substrate 200 away from the upper substrate 100, and
  • the backlight module 600 is disposed on a side of the lower polarizer 500 away from the lower substrate 200.
  • the lower substrate 200 includes a first substrate 210, a TFT array layer 220 disposed on the first substrate 210, a color resist layer 230 disposed on the TFT array layer 220, a cap color mask layer 230, and a TFT array layer.
  • the BPS light shielding layer 250 includes black a matrix 251, a main spacer 252 disposed on the black matrix 251 and spaced apart from each other, and an auxiliary spacer 253;
  • the reflective electrode 270 is disposed on the black matrix 251, and the reflective electrode 270 is opposite to the pixel electrode 260 Connecting; the reflective electrode 270 and the upper substrate The distance between 100 is equal to one-half the distance between the pixel electrode 260 and the upper substrate 100.
  • the optical axis of the upper polarizer 400 is parallel to the optical axis of the lower polarizer 500, that is, the transflective liquid crystal display device of the present invention is in a normally black state when no voltage is applied.
  • the upper substrate 100 includes a second substrate 110 and a common electrode 120 disposed on a side of the second substrate 110 adjacent to the lower substrate 200.
  • the lower substrate 200 has a plurality of sub-pixels 201 arranged in an array;
  • the color resist layer 230 includes a plurality of color resist blocks 231 disposed corresponding to the plurality of sub-pixels 201, Two color-blocking blocks 231 are spaced apart from each other, and the color resist layer 230 further includes a plurality of color-resisting bridges 232 disposed between adjacent rows of color-blocking blocks 231.
  • the BPS light-shielding layer 250 The black matrix 251 covers an area between two adjacent rows of color resist blocks 231, which are correspondingly located above the color resist bridge 232.
  • the BPS light shielding layer 250 is formed by photolithography of a BPS material layer formed on the flat layer 240 by using a halftone mask.
  • the light transmittance of the area where the halftone mask is used to form the main spacer 252 is the same as the light transmittance of the area for forming the auxiliary spacer 253.
  • the halftone mask when the BPS material layer is a negative photoresist material, includes a full light transmission region for forming the main spacer 252 and the auxiliary spacer 253, and a half for forming the black matrix 251. a light transmissive region, and an opaque region outside the semi-transmissive region and the semi-transmissive region.
  • the halftone mask When the BPS material layer is a positive photoresist material, the halftone mask includes a main spacer 252 for forming An opaque region of the auxiliary spacer 253, a semi-transmissive region for forming the black matrix 251, and a fully transparent region outside the opaque region and the semi-transmissive region, thereby forming a pair of halftone masks
  • a BPS light shielding layer 250 including a black matrix 251 and spaced apart main spacers 252 and auxiliary spacers 253 disposed on the black matrix 251 can be formed.
  • the material of the reflective electrode 270 may be aluminum (Al), silver (Ag), or other high reflectivity conductive material.
  • the transflective liquid crystal display device of the present invention adopts a BPS design, and the reflective electrode 270 is disposed on the black matrix 251 of the BPS light shielding layer 250, and the reflective electrode 270 is connected to the pixel electrode 260, thereby A region corresponding to the reflective electrode 270 forms a reflective region, and a transmissive region is formed in a region corresponding to the pixel electrode 260, and a distance between the pixel electrode 260 and the upper substrate 100 is twice the distance between the reflective electrode 270 and the upper substrate 100, so that the transmissive region is Reflected area light The path difference is the same. In the case where no voltage is applied, the transmission region is in a dark state.
  • the reflection region Since the optical path difference of the reflection region is the same as that of the transmission region, the reflection region is also in a dark state, and is applied between the common electrode 120 and the pixel electrode 260.
  • the voltage makes the transmission region bright
  • the pixel electrode 260 is connected to the reflective electrode 270, the transmission region is synchronized with the liquid crystal deflection angle in the reflection region, and the reflection region is also in a bright state, which improves the display brightness of the screen and the external light intensity.
  • the larger the brightness of the reflective area the higher the brightness of the picture display, and by controlling the process parameters for forming the BPS light-shielding layer 250, the step difference between the black matrix 251 and the flat layer 240, and the black matrix 251 can be easily controlled.
  • the step difference from the main spacer 252 is such that the distance between the pixel electrode 260 formed on the flat layer 240 and the upper substrate 100 is twice the distance between the reflective electrode 270 formed on the black matrix 251 and the upper substrate 100.
  • the structure is simple, the process difficulty is low, and the reflective area is disposed on the black matrix 251, and does not occupy the area of the transmissive area, and does not affect the device. Transmittance.
  • the transflective liquid crystal display device of the present invention adopts a COA and BPS design, and the reflective electrode is disposed on the black matrix of the BPS light shielding layer, and the reflective electrode is connected to the pixel electrode to make the device reflect in the corresponding
  • the region of the electrode forms a reflective region, and the region corresponding to the pixel electrode forms a transmissive region, which can enhance the brightness of the display image when the external light intensity is large, and the reflective region does not occupy the area of the transmissive region and does not affect the transmittance of the device.
  • the thickness of the liquid crystal cell of the reflective region and the transmissive region can be controlled by controlling the thickness of the black matrix without introducing an additional insulating layer, and the structure is simple.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Liquid Crystal (AREA)

Abstract

一种透反式液晶显示装置采用COA及BPS设计，并将反射电极（270）设置于BPS遮光层（250）的黑色矩阵（251）上，且使反射电极（270）与像素电极（260）相连接，使装置在对应反射电极（270）的区域形成反射区，而对应像素电极（260）的区域形成透射区，能够在外在光强度较大时提升显示画面的亮度，且反射区并不占用透射区的面积，不会影响装置的透过率，同时反射区与透射区的液晶盒厚可通过控制黑色矩阵的厚度进行控制，无需引入额外的绝缘层，结构简单。

Description

透反式液晶显示装置 技术领域
本发明涉及液晶显示技术领域，尤其涉及一种透反式液晶显示装置。
背景技术
随着显示技术的发展，液晶显示器(Liquid Crystal Display，LCD)等平面显示装置因具有高画质、省电、机身薄及应用范围广等优点，而被广泛的应用于手机、电视、个人数字助理、数字相机、笔记本电脑、台式计算机等各种消费性电子产品，成为显示装置中的主流。
目前市场上液晶显示器以光源需求大略分为三类，透射式液晶显示器、反射式液晶显示器及透反式液晶显示器。其中，透射式的液晶显示器以液晶面板背面的背光模组作为光源，背光模组发出的光线穿过阵列基板透明的像素电极进行画面显示，透射式液晶显示器适合使用在弱光源的环境中，如在室内使用，而在室外使用时，当外在光源过于强大时，会使背光源的强度受到外在光的干扰，而使得眼睛看显示器时会因此而觉得面板过亮而不清楚，影响到影像品质。而且长期使用背光源，使电量的消耗非常大，而小尺寸的显示器通常使用电池供电，所以容易出现很快没电的情况。
反射式液晶显示器主要是以前光源或者外界自然光作为光源，其阵列基板上设有用金属或者其他具有良好反射特性材料制作的反射电极，通过反射电极反射前光源或者外界自然光的光线实现画面显示，反射式液晶显示器则适合用于外在光源强大的地方，通过反射自然光进行显示能够降低显示器的能耗，但在光源弱的地方，会出现光强度不足的现象，影响影像品质。
透反式液晶显示面板则可视为透射式与反射式液晶显示面板的结合，在阵列基板上既设置有反射区，又设置有透射区，可以同时利用背光源以及前光源或者外界光源以进行显示。在光线较暗的环境下，主要靠透射模式，也就是利用液晶显示器自身的背光源发光使液晶显示面板显示图像，在阳光下等光线充足的情况下，主要靠反射模式，即利用液晶显示面板内的反射电极将外部的自然光反射出去，以此作为光源显示图像，因此透反式液晶显示器适用于各种光线强度的外部环境，尤其具有优秀的户外可视性能，并且背光源的亮度不需要很高，具有功耗低的特点。
请参阅图1，为现有的一种透反式液晶显示装置的结构示意图，该透反 式液晶显示装置包括相对设置的上基板100’与下基板200’、及设于上基板100’与下基板200’之间的液晶层300’，其中，所述上基板100’为彩膜基板，具有公共电极110’，所述下基板200’包括阵列基板210’、设于阵列基板210’上的绝缘层220’、及设于所述绝缘层220’上的反射电极230’，所述下基板200’具有反射区201’及透射区202’，绝缘层220’及反射电极230’均与反射区201’对应，阵列基板210’在透射区202’设有像素电极211’，液晶层300’中与反射区201’对应区域的厚度为与透射区202’对应区域的厚度的二分之一。该透反式液晶显示装置虽然能够进行透反显示，然而由于反射区201’的存在，严重的影响了液晶显示装置的透过率，同时需要通过控制绝缘层220’的厚度来实现液晶层300’在反射区201’的厚度为在透射区202’的厚度的二分之一，制程复杂难以实现。
发明内容
本发明的目的在于提供一种透反式液晶显示装置，能够在外在光强度较大时提升显示画面的亮度，透过率高，无需引入额外的绝缘层，结构简单。
为实现上述目的，本发明提供一种透反式液晶显示装置，包括：相对设置的上基板与下基板、及设于上基板与下基板之间的液晶层；
所述下基板包括第一衬底、设于第一衬底上的TFT阵列层、设于TFT阵列层上的色阻层、覆盖色阻层及TFT阵列层的平坦层、设于平坦层上的BPS遮光层、设于平坦层上的像素电极、及设于BPS遮光层上的反射电极；
所述BPS遮光层包括黑色矩阵、设于黑色矩阵上且间隔设置的主隔垫物及辅助隔垫物；所述反射电极设于所述黑色矩阵上，且所述反射电极与像素电极相连接；
所述反射电极与上基板之间的距离等于像素电极与上基板之间的距离的二分之一。
所述下基板具有阵列排布的多个子像素；所述色阻层包括对应多个子像素设置的多个色阻块，相邻两行色阻块相间隔，所述色阻层还包括设于相邻两行色阻块之间的多个色阻桥；
所述BPS遮光层的黑色矩阵覆盖相邻两行色阻块之间的区域，所述主隔垫物对应位于色阻桥上方。
所述BPS遮光层通过利用半色调光罩对一形成于平坦层上的BPS材料层进行光刻制程制得。
所述半色调光罩用于形成主隔垫物的区域的透光率与用于形成辅助隔 垫物的区域的透光率相同。
所述透反式液晶显示装置还包括设于上基板远离下基板一侧的上偏光片、及设于下基板远离上基板一侧的下偏光片。
所述上偏光片的光轴与下偏光片的光轴相平行。
所述透反式液晶显示装置还包括设于下偏光片远离下基板一侧的背光模组。
所述上基板包括第二衬底、及设于第二衬底靠近下基板一侧上的公共电极。
所述反射电极的材料为铝或银。
本发明还提供一种透反式液晶显示装置，包括：相对设置的上基板与下基板、及设于上基板与下基板之间的液晶层；
所述下基板包括第一衬底、设于第一衬底上的TFT阵列层、设于TFT阵列层上的色阻层、覆盖色阻层及TFT阵列层的平坦层、设于平坦层上的BPS遮光层、设于平坦层上的像素电极、及设于BPS遮光层上的反射电极；
所述BPS遮光层包括黑色矩阵、设于黑色矩阵上且间隔设置的主隔垫物及辅助隔垫物；所述反射电极设于所述黑色矩阵上，且所述反射电极与像素电极相连接；
所述反射电极与上基板之间的距离等于像素电极与上基板之间的距离的二分之一；
其中，所述下基板具有阵列排布的多个子像素；所述色阻层包括对应多个子像素设置的多个色阻块，相邻两行色阻块相间隔，所述色阻层还包括设于相邻两行色阻块之间的多个色阻桥；
所述BPS遮光层的黑色矩阵覆盖相邻两行色阻块之间的区域，所述主隔垫物对应位于色阻桥上方；
其中，所述BPS遮光层通过利用半色调光罩对一形成于平坦层上的BPS材料层进行光刻制程制得；
其中，所述半色调光罩用于形成主隔垫物的区域的透光率与用于形成辅助隔垫物的区域的透光率相同；
还包括设于上基板远离下基板一侧的上偏光片、及设于下基板远离上基板一侧的下偏光片。
本发明的有益效果：本发明提供的一种透反式液晶显示装置，采用COA及BPS设计，并将反射电极设置于BPS遮光层的黑色矩阵上，且使反射电极与像素电极相连接，使装置在对应反射电极的区域形成反射区，而对应像素电极的区域形成透射区，能够在外在光强度较大时提升显示画面的亮 度，且反射区并不占用透射区的面积，不会影响装置的透过率，同时反射区与透射区的液晶盒厚可通过控制黑色矩阵的厚度进行控制，无需引入额外的绝缘层，结构简单。
附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为现有的一种透反式液晶显示装置的剖面结构示意图；
图2为本发明的透反式液晶显示装置在主隔垫物处的剖视结构示意图；
图3为本发明的透反式液晶显示装置在黑色矩阵处的剖视结构示意图；
图4为本发明的透反式液晶显示装置的色阻层的俯视示意图；
图5为本发明的透反式液晶显示装置的色阻层与BPS遮光层的俯视示意图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
本发明提供一种透反式液晶显示装置，应用将彩色滤光层直接制备在的阵列基板上(Color Filter on Array，COA)的技术、及利用黑色光阻隔垫物(Black Photo Spacer，BPS)材料通过一道制程同时制得黑色矩阵和主、辅助隔垫物的技术，请参阅图2至图5，本发明的透反式液晶显示装置包括：相对设置的上基板100与下基板200、设于上基板100与下基板200之间的液晶层300、设于上基板100远离下基板200一侧的上偏光片400、设于下基板200远离上基板100一侧的下偏光片500、及设于下偏光片500远离下基板200一侧的背光模组600。
其中，所述下基板200包括第一衬底210、设于第一衬底210上的TFT阵列层220、设于TFT阵列层220上的色阻层230、覆盖色阻层230及TFT阵列层220的平坦层240、设于平坦层240上的BPS遮光层250、设于平坦层240上的像素电极260、及设于BPS遮光层250上的反射电极270；所述BPS遮光层250包括黑色矩阵251、设于黑色矩阵251上且间隔设置的主隔垫物252及辅助隔垫物253；所述反射电极270设于所述黑色矩阵251上，且所述反射电极270与像素电极260相连接；所述反射电极270与上基板 100之间的距离等于像素电极260与上基板100之间的距离的二分之一。
具体地，所述上偏光片400的光轴与下偏光片500的光轴相平行，也即本发明的透反式液晶显示装置不接入电压时为常黑态。
具体地，所述上基板100包括第二衬底110、及设于第二衬底110靠近下基板200一侧上的公共电极120。
具体地，请参阅图4，在本发明中，所述下基板200具有阵列排布的多个子像素201；所述色阻层230包括对应多个子像素201设置的多个色阻块231，相邻两行色阻块231相间隔，所述色阻层230还包括设于相邻两行色阻块231之间的多个色阻桥232；请参阅图5，所述BPS遮光层250的黑色矩阵251覆盖相邻两行色阻块231之间的区域，所述主隔垫物252对应位于色阻桥232上方。
具体地，所述BPS遮光层250通过利用半色调光罩对一形成于平坦层240上的BPS材料层进行光刻制程制得。具体地，所述半色调光罩用于形成主隔垫物252的区域的透光率与用于形成辅助隔垫物253的区域的透光率相同。
进一步地，当BPS材料层采用负性光阻材料时，所述半色调光罩包括用于形成主隔垫物252及辅助隔垫物253的全透光区、用于形成黑色矩阵251的半透光区、以及位于全透光区及半透光区以外的不透光区，当BPS材料层采用正性光阻材料时，所述半色调光罩包括用于形成主隔垫物252及辅助隔垫物253的不透光区、用于形成黑色矩阵251的半透光区、以及位于不透光区及半透光区以外的全透光区，从而利用半色调光罩对形成于平坦层240上的BPS材料层进行曝光显影后，即可形成包括黑色矩阵251、及设于黑色矩阵251上的相间隔的主隔垫物252及辅助隔垫物253的BPS遮光层250，同时由于色阻桥232的存在，即使半色调光罩用于形成主隔垫物252的区域的透光率与用于形成辅助隔垫物253的区域的透光率相同，主隔垫物252与辅助隔垫物253之间也会形成段差，实现主、辅助隔垫物252、253的功能。
具体地，所述反射电极270的材料可以为铝(Al)、银(Ag)、或其他高反射率的导电材料。
需要说明的是，本发明的透反式液晶显示装置，采用BPS设计，并将反射电极270设置在BPS遮光层250的黑色矩阵251上，且使反射电极270与像素电极260相连接，从而在对应反射电极270的区域形成反射区，在对应像素电极260的区域形成透射区，且像素电极260与上基板100间的距离为反射电极270与上基板100间距离的两倍，使透射区与反射区的光 程差相同，在不施加电压的情况下，透射区为暗态，由于反射区的光程差与透射区相同，因而反射区也为暗态，当向公共电极120与像素电极260之间施加电压使透射区为亮态时，由于像素电极260与反射电极270相连，透射区与反射区内的液晶偏转角度同步，反射区也为亮态，提升了画面的显示亮度，且外在光强度越大，反射区的亮度越高，画面显示亮度越高，并且，通过控制形成BPS遮光层250的工艺参数，可以很容易地控制黑色矩阵251与平坦层240之间的段差、以及黑色矩阵251与主隔垫物252之间的段差，使形成在平坦层240上的像素电极260与上基板100间的距离为形成在黑色矩阵251上的反射电极270与上基板100间距离的两倍，相比于现有技术，无需引入额外的绝缘层，结构简单，制程难度低，且反射区设置于黑色矩阵251上，并不会占用透射区的面积，不影响装置的透过率。
综上所述，本发明的透反式液晶显示装置，采用COA及BPS设计，并将反射电极设置于BPS遮光层的黑色矩阵上，且使反射电极与像素电极相连接，使装置在对应反射电极的区域形成反射区，而对应像素电极的区域形成透射区，能够在外在光强度较大时提升显示画面的亮度，且反射区并不占用透射区的面积，不会影响装置的透过率，同时反射区与透射区的液晶盒厚可通过控制黑色矩阵的厚度进行控制，无需引入额外的绝缘层，结构简单。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明后附的权利要求的保护范围。

Claims (14)

  1. 一种透反式液晶显示装置，包括：相对设置的上基板与下基板、及设于上基板与下基板之间的液晶层；
    所述下基板包括第一衬底、设于第一衬底上的TFT阵列层、设于TFT阵列层上的色阻层、覆盖色阻层及TFT阵列层的平坦层、设于平坦层上的BPS遮光层、设于平坦层上的像素电极、及设于BPS遮光层上的反射电极；
    所述BPS遮光层包括黑色矩阵、设于黑色矩阵上且间隔设置的主隔垫物及辅助隔垫物；所述反射电极设于所述黑色矩阵上，且所述反射电极与像素电极相连接；
    所述反射电极与上基板之间的距离等于像素电极与上基板之间的距离的二分之一。
  2. 如权利要求1所述的透反式液晶显示装置，其中，所述下基板具有阵列排布的多个子像素；所述色阻层包括对应多个子像素设置的多个色阻块，相邻两行色阻块相间隔，所述色阻层还包括设于相邻两行色阻块之间的多个色阻桥；
    所述BPS遮光层的黑色矩阵覆盖相邻两行色阻块之间的区域，所述主隔垫物对应位于色阻桥上方。
  3. 如权利要求2所述的透反式液晶显示装置，其中，所述BPS遮光层通过利用半色调光罩对一形成于平坦层上的BPS材料层进行光刻制程制得。
  4. 如权利要求3所述的透反式液晶显示装置，其中，所述半色调光罩用于形成主隔垫物的区域的透光率与用于形成辅助隔垫物的区域的透光率相同。
  5. 如权利要求1所述的透反式液晶显示装置，还包括设于上基板远离下基板一侧的上偏光片、及设于下基板远离上基板一侧的下偏光片。
  6. 如权利要求5所述的透反式液晶显示装置，其中，所述上偏光片的光轴与下偏光片的光轴相平行。
  7. 如权利要求5所述的透反式液晶显示装置，还包括设于下偏光片远离下基板一侧的背光模组。
  8. 如权利要求1所述的透反式液晶显示装置，其中，所述上基板包括第二衬底、及设于第二衬底靠近下基板一侧上的公共电极。
  9. 如权利要求1所述的透反式液晶显示装置，其中，所述反射电极的材料为铝或银。
  10. 一种透反式液晶显示装置，包括：相对设置的上基板与下基板、及设于上基板与下基板之间的液晶层；
    所述下基板包括第一衬底、设于第一衬底上的TFT阵列层、设于TFT阵列层上的色阻层、覆盖色阻层及TFT阵列层的平坦层、设于平坦层上的BPS遮光层、设于平坦层上的像素电极、及设于BPS遮光层上的反射电极；
    所述BPS遮光层包括黑色矩阵、设于黑色矩阵上且间隔设置的主隔垫物及辅助隔垫物；所述反射电极设于所述黑色矩阵上，且所述反射电极与像素电极相连接；
    所述反射电极与上基板之间的距离等于像素电极与上基板之间的距离的二分之一；
    其中，所述下基板具有阵列排布的多个子像素；所述色阻层包括对应多个子像素设置的多个色阻块，相邻两行色阻块相间隔，所述色阻层还包括设于相邻两行色阻块之间的多个色阻桥；
    所述BPS遮光层的黑色矩阵覆盖相邻两行色阻块之间的区域，所述主隔垫物对应位于色阻桥上方；
    其中，所述BPS遮光层通过利用半色调光罩对一形成于平坦层上的BPS材料层进行光刻制程制得；
    其中，所述半色调光罩用于形成主隔垫物的区域的透光率与用于形成辅助隔垫物的区域的透光率相同；
    还包括设于上基板远离下基板一侧的上偏光片、及设于下基板远离上基板一侧的下偏光片。
  11. 如权利要求10所述的透反式液晶显示装置，其中，所述上偏光片的光轴与下偏光片的光轴相平行。
  12. 如权利要求10所述的透反式液晶显示装置，还包括设于下偏光片远离下基板一侧的背光模组。
  13. 如权利要求10所述的透反式液晶显示装置，其中，所述上基板包括第二衬底、及设于第二衬底靠近下基板一侧上的公共电极。
  14. 如权利要求10所述的透反式液晶显示装置，其中，所述反射电极的材料为铝或银。
PCT/CN2017/111027 2017-08-25 2017-11-15 透反式液晶显示装置 Ceased WO2019037286A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/578,246 US20190064616A1 (en) 2017-08-25 2017-11-15 Transflective liquid crystal display

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710745224.9A CN107463039A (zh) 2017-08-25 2017-08-25 透反式液晶显示装置
CN201710745224.9 2017-08-25

Publications (1)

Publication Number Publication Date
WO2019037286A1 true WO2019037286A1 (zh) 2019-02-28

Family

ID=60549449

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/111027 Ceased WO2019037286A1 (zh) 2017-08-25 2017-11-15 透反式液晶显示装置

Country Status (2)

Country Link
CN (1) CN107463039A (zh)
WO (1) WO2019037286A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107908054B (zh) * 2017-12-15 2020-11-06 深圳市华星光电技术有限公司 显示装置、半透半反的阵列基板及其制造方法
US10461102B2 (en) 2017-12-15 2019-10-29 Shenzhen China Star Optoelectronics Technology Co., Ltd Display device, transflective array substrate, and manufacturing method thereof
CN114764205B (zh) * 2022-05-26 2025-10-28 京东方科技集团股份有限公司 显示面板及其制备方法、电子设备
CN118968925B (zh) * 2024-08-30 2025-10-03 惠科股份有限公司 显示面板和显示装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103018951A (zh) * 2012-12-14 2013-04-03 京东方科技集团股份有限公司 半透半反式液晶显示面板及其制作方法、显示装置
CN203688942U (zh) * 2014-01-24 2014-07-02 京东方科技集团股份有限公司 半透半反式液晶显示面板及显示装置
US20140232975A1 (en) * 2013-02-19 2014-08-21 Japan Display Inc. Display device
CN106501988A (zh) * 2016-10-31 2017-03-15 深圳市华星光电技术有限公司 Cf基板及其制作方法与液晶显示面板
CN107039352A (zh) * 2017-04-12 2017-08-11 深圳市华星光电技术有限公司 Tft基板的制作方法及tft基板
CN107065320A (zh) * 2017-06-05 2017-08-18 深圳市华星光电技术有限公司 一种液晶面板及其制造方法
CN107357076A (zh) * 2017-08-16 2017-11-17 深圳市华星光电半导体显示技术有限公司 透反式液晶显示装置及其制作方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104965333B (zh) * 2015-07-15 2018-05-01 深圳市华星光电技术有限公司 Coa型液晶显示面板及其制作方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103018951A (zh) * 2012-12-14 2013-04-03 京东方科技集团股份有限公司 半透半反式液晶显示面板及其制作方法、显示装置
US20140232975A1 (en) * 2013-02-19 2014-08-21 Japan Display Inc. Display device
CN203688942U (zh) * 2014-01-24 2014-07-02 京东方科技集团股份有限公司 半透半反式液晶显示面板及显示装置
CN106501988A (zh) * 2016-10-31 2017-03-15 深圳市华星光电技术有限公司 Cf基板及其制作方法与液晶显示面板
CN107039352A (zh) * 2017-04-12 2017-08-11 深圳市华星光电技术有限公司 Tft基板的制作方法及tft基板
CN107065320A (zh) * 2017-06-05 2017-08-18 深圳市华星光电技术有限公司 一种液晶面板及其制造方法
CN107357076A (zh) * 2017-08-16 2017-11-17 深圳市华星光电半导体显示技术有限公司 透反式液晶显示装置及其制作方法

Also Published As

Publication number Publication date
CN107463039A (zh) 2017-12-12

Similar Documents

Publication Publication Date Title
WO2019033593A1 (zh) 透反式液晶显示装置及其制作方法
TW200300861A (en) Liquid crystal display device, substrate for liquid crystal display device, and electronic apparatus
US9733513B2 (en) Transflective liquid crystal display panel comprising a transmission axis of a first polarizer and a transmission axis of a second polarizer forming an angle of 0 to 20 degrees, manufacturing method thereof, and display device
CN103176307B (zh) 半透半反液晶显示面板以及液晶显示装置
CN103995390B (zh) 显示面板、显示装置及显示面板的制造方法
WO2019037286A1 (zh) 透反式液晶显示装置
WO2020220526A1 (zh) 反射式液晶显示面板
CN203688942U (zh) 半透半反式液晶显示面板及显示装置
TW594235B (en) Transflective LCD apparatus and method for forming the same
TW538268B (en) Liquid crystal display device
US20190049801A1 (en) Transflective liquid crystal display device
JP2007017798A (ja) 液晶表示装置
TWI228622B (en) Trans-flective liquid crystal display and pixel structure of the same
CN111919163B (zh) 阵列基板以及显示装置
JP2002328370A (ja) 液晶表示装置
JP4733967B2 (ja) 液晶表示パネル及びこれを有する液晶表示装置。
US20190064616A1 (en) Transflective liquid crystal display
US20190056622A1 (en) Transflective liquid crystal display and manufacturing method thereof
JP2005157373A5 (zh)
CN101311753A (zh) 彩色滤光基板及其制造方法
KR20070002197A (ko) 반사투과형 액정 표시 장치 및 그 제조 방법
WO2018176601A1 (zh) 透反式液晶显示装置
KR100673716B1 (ko) 단일갭형 반투과형 액정표시소자
WO2018171078A1 (zh) 主动开关阵列基板及其制造方法与其应用的显示设备
CN108227280B (zh) 一种基于寻常光模式的宽视角液晶显示屏

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17922500

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17922500

Country of ref document: EP

Kind code of ref document: A1