WO2013149483A1 - 液晶面板、液晶显示器及其制造方法 - Google Patents
液晶面板、液晶显示器及其制造方法 Download PDFInfo
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- WO2013149483A1 WO2013149483A1 PCT/CN2012/086506 CN2012086506W WO2013149483A1 WO 2013149483 A1 WO2013149483 A1 WO 2013149483A1 CN 2012086506 W CN2012086506 W CN 2012086506W WO 2013149483 A1 WO2013149483 A1 WO 2013149483A1
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- signal line
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- liquid crystal
- piezoelectric material
- spacer
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- 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
- G02F1/13338—Input devices, e.g. touch panels
-
- 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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
- G06F3/04146—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position using pressure sensitive conductive elements delivering a boolean signal and located between crossing sensing lines, e.g. located between X and Y sensing line layers
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- 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
- G02F1/133394—Piezoelectric elements associated with the cells
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- 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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13398—Spacer materials; Spacer properties
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- 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
- G02F1/136286—Wiring, e.g. gate line, drain line
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
Definitions
- Liquid crystal panel, liquid crystal display and manufacturing method thereof Liquid crystal panel, liquid crystal display and manufacturing method thereof
- Embodiments of the present invention relate to a liquid crystal panel, a liquid crystal display, and a method of fabricating the same. Background technique
- the thin film transistor liquid crystal display is an optoelectronic product that integrates a large-scale semiconductor integrated circuit and a flat panel light source technology with a thin film transistor as a control element and a liquid crystal as a medium.
- Thin Film Transistors Liquid crystal displays have become the next generation of mainstream displays due to their low power consumption, portability, wide range of use, and high quality.
- a touch panel is used in order to allow the user to perform related operations while viewing the screen.
- the touch display is one of the important carriers for integrating the input and output terminals.
- the touch display screen by measuring the coordinate position of the touch point on the display screen, the toucher's intention can be known according to the display content or graphic of the corresponding coordinate point on the display screen, thereby performing related operations.
- the use of resistive, capacitive, infrared, surface acoustic wave and other technologies to achieve the confirmation of the touch point position.
- the touch screens using these technical solutions are usually separately prepared and then attached to the display screen to achieve the touch effect on the display screen.
- the touch display screen formed by separately preparing the touch screen and the display screen is generally costly, and has a large thickness and weight, which is not conducive to the requirement of thinning and thinning of the display screen; Large, so the touch position can not be accurately positioned; the touch screen on the surface of the display will reduce the light transmittance of the display, and require a higher power backlight under the same display brightness.
- the touch display screen of the prior art the touch screen and the display screen are separately prepared and assembled together by a fitting manner. Therefore, the touch display screen of the prior art has the following problems: The function of the touch panel is not integrated with the display panel. Chemical. Summary of the invention
- a liquid crystal panel comprising: a color filter substrate; an array substrate; a piezoelectric material spacer disposed between the color film substrate and the array substrate; a signal line disposed between the color filter substrate and the piezoelectric material spacer; and the piezoelectric Another signal line disposed between the material spacer and the array substrate, wherein the two signal lines are respectively in contact with the color film substrate side surface of the piezoelectric material spacer and the array substrate side surface, the color The projection of the signal line on the film substrate side on the array substrate side surface of the piezoelectric material spacer intersects with the signal line on the array substrate side, and the two signal lines are insulated from each other.
- a liquid crystal display is provided.
- the liquid crystal panel and the detecting circuit are disposed on a body of the liquid crystal display, and the detecting circuit is connected to two signal lines for detecting two There is no electrical signal generated on the signal line.
- a method of fabricating a liquid crystal panel including: forming a first signal line on a first substrate; forming a piezoelectric material spacer on the first signal line, the pressing a first substrate side surface of the electrical material spacer is in contact with the first signal line; a second signal line is formed on the second substrate side surface of the piezoelectric material spacer, the piezoelectric material spacer The two substrate side surfaces are in contact with the second signal line, the projection of the first signal line on the second substrate side surface of the piezoelectric material spacer intersects with the second signal line, and the first signal line and the second signal line are mutually And insulating the first substrate and the second substrate, the first substrate is one of a color film substrate and an array substrate, and the second substrate is the other of the color film substrate and the array substrate.
- FIG. 1 is a flow chart showing a method for preparing a touch layer on a color filter substrate according to an embodiment of the present invention
- 2-1 is a cross-sectional structural view showing a color filter substrate of a thin film transistor liquid crystal display according to an embodiment of the present invention
- FIG. 2-2 is a schematic view showing the planar structure of a color filter substrate of a thin film transistor liquid crystal display according to an embodiment of the present invention
- FIG. 3 is a schematic structural view of a color filter substrate after depositing an insulating layer according to an embodiment of the present invention
- FIG. 4-1 is a cross-sectional structural view showing a color filter substrate after forming a first conductive signal line according to an embodiment of the present invention
- FIG. 4-2 shows the flatness of the color filter substrate after forming the first conductive signal line according to the embodiment of the present invention.
- FIG. 5-1 is a cross-sectional structural view showing a color filter substrate formed by forming a columnar spacer of a piezoelectric material according to an embodiment of the present invention
- 5-2 is a schematic plan view showing a planar structure of a color filter substrate formed by forming a columnar spacer of a piezoelectric material according to an embodiment of the present invention
- 6-1 is a schematic structural view of a color filter substrate after depositing an insulating layer according to an embodiment of the present invention
- 6-2 is a schematic structural view of a color filter substrate after performing photolithography treatment on an insulating layer according to an embodiment of the present invention
- 7-1 is a cross-sectional structural view showing a color filter substrate after forming a second conductive signal line according to an embodiment of the present invention
- FIG. 7-2 is a schematic view showing the planar structure of a color filter substrate after forming a second conductive signal line according to an embodiment of the present invention
- FIG. 8 is a schematic structural view of a color filter substrate after depositing an insulating layer and a common electrode layer according to an embodiment of the present invention
- FIG. 9 is a schematic view showing the structure of a color filter substrate after depositing a liquid crystal molecule alignment layer according to an embodiment of the present invention.
- Figure 10 is a schematic view showing the structure of a color filter substrate and an array substrate after the cartridge is provided in the embodiment of the present invention
- FIG. 11 is a flow chart showing a method for preparing a touch layer on an array substrate according to an embodiment of the present invention.
- 12-1 is a cross-sectional structural view showing an array substrate of a thin film transistor liquid crystal display according to an embodiment of the present invention
- 12-2 is a schematic view showing the planar structure of an array substrate of a thin film transistor liquid crystal display according to an embodiment of the present invention
- FIG. 13 is a schematic structural view of an array substrate after depositing an insulating layer according to an embodiment of the present invention
- FIG. 14-1 is a cross-sectional structural view showing an array substrate after forming a first conductive signal line according to an embodiment of the present invention
- FIG. 14-2 is a schematic diagram showing the planar structure of an array substrate after forming a first conductive signal line according to an embodiment of the present invention
- FIG. 15-1 is a cross-sectional structural view showing an array substrate after forming a bump of a piezoelectric material column spacer according to an embodiment of the present invention
- Figure 15-2 is a plan view showing the planar structure of the array substrate after forming the pillars of the piezoelectric material column spacer according to the embodiment of the present invention
- 16-1 is a schematic structural view of an array substrate after depositing an insulating layer according to an embodiment of the present invention
- 16-2 is a schematic structural view of an array substrate after performing photolithography processing on an insulating layer according to an embodiment of the present invention
- 17-1 is a cross-sectional structural view showing an array substrate after forming a second conductive signal line according to an embodiment of the present invention
- 17-2 is a schematic diagram showing a planar structure of an array substrate after forming a second conductive signal line according to an embodiment of the present invention
- Figure 18 is a view showing the structure of an array substrate after depositing a liquid crystal molecule alignment layer according to an embodiment of the present invention
- Fig. 19 is a view showing the structure of the array substrate and the color filter substrate after the cartridge is provided in the embodiment of the present invention. detailed description
- the embodiment of the present invention provides a liquid crystal panel, wherein a piezoelectric material spacer is disposed between the color film substrate and the array substrate. Pad and two signal lines.
- a signal line is disposed between the color film substrate and the piezoelectric material spacer of the liquid crystal panel, and another signal line is disposed between the piezoelectric material spacer and the array substrate, and the two signal lines are respectively pressed
- the color film substrate side surface of the electrical material spacer is in contact with the array substrate side surface
- the signal line of the color film substrate side is projected on the array substrate side surface of the piezoelectric material spacer and the signal line on the array substrate side
- two The signal lines are insulated from each other.
- the color filter substrate may include a glass substrate and a black matrix, color pixels, and the like formed on the glass substrate
- the array substrate may include another glass substrate and gate signal lines and data formed on the glass substrate. Signal lines, etc.
- An embodiment of the present invention further provides a liquid crystal display, wherein the liquid crystal panel is disposed on the body of the liquid crystal display, and a detecting circuit connected to the two signal lines for detecting the presence or absence of an electrical signal on the two signal lines .
- the liquid crystal display is a thin film transistor liquid crystal display, but the embodiment of the invention is not limited thereto.
- a liquid crystal panel and a liquid crystal display provided by an embodiment of the present invention will be exemplified by taking a thin film transistor liquid crystal display as an example.
- the thin film transistor liquid crystal display controls the orientation of the liquid crystal in the liquid crystal cell by applying a voltage to the electrodes on the array substrate and the color filter substrate, and controls the optical cell through the liquid crystal by optical characteristics such as optical anisotropy and birefringence. Luminous flux to obtain the desired image.
- the thickness of the liquid crystal cell formed by the array substrate and the color filter substrate directly affects the luminous flux passing through the liquid crystal cell. Therefore, controlling the thickness of the liquid crystal cell is extremely important for improving the uniformity of the display of the liquid crystal display and optimizing the display performance.
- a spacer of a certain thickness between the array substrate and the color filter substrate There are various types of spacers, one of which is to form a pillar spacer (PS) on a color filter substrate by a photolithography process, and the pillar spacer is used to control the thickness of the liquid crystal cell.
- PS pillar spacer
- spacers of other shapes such as spherical spacers
- a column spacer is taken as an example for description. Since the position, height, topography, and the like of the column spacer can be precisely controlled by a photolithography process, the liquid crystal display using the column spacer has a great display performance compared to the liquid crystal display using other shape spacers. Improvement.
- Some materials with asymmetric lattice structure will change (ie, strain) the shape of the material under external force (pressure or tension); the change of shape will make the internal electron distribution of the material be locally uneven, and then on the outer surface of the material. A net electric field distribution is produced.
- a voltage signal is applied to a material, the material deforms under the action of a voltage, and the deformation changes as the applied voltage changes. This effect is called the piezoelectric effect, and the material having the piezoelectric effect is called a piezoelectric material.
- piezoelectric materials The conversion between electrical energy and mechanical energy.
- a piezoelectric spacer is used to form a column spacer, which directly uses an electrical signal generated by an external pressure based on a piezoelectric effect, in addition to supporting the thickness of the liquid crystal cell, and is matched with the cross.
- the signal line is used to determine the touch position, thereby realizing the integration of the function of the touch and the display panel; on the other hand, when not in use, a certain voltage can be applied to the columnar spacer of the piezoelectric material to restore the original height.
- the thickness of the liquid crystal cell is maintained by control.
- embodiments of the present invention provide a liquid crystal panel and a liquid crystal display capable of realizing a functional integrated touch panel capable of providing energy while maintaining the thickness of the liquid crystal cell, and having high transmittance and simple structure. , low cost of preparation, high precision and long life.
- FIG. 1 is a flow chart showing a method for preparing a touch layer on a color film substrate according to an embodiment of the present invention. As shown in FIG. 1, the method includes, for example, steps 101 to 109.
- Step 101 preparing a color film substrate.
- a black matrix 1, a red pixel 2, a green pixel 3, and a blue pixel 4 are formed on the glass substrate 0a, as shown in Figs. 2-1 and 2-2.
- Step 102 depositing an insulating layer 5a on the color filter substrate of step 101, as shown in FIG. If the black matrix 1 and the color pixel layer are non-conductive materials, step 102 can be omitted.
- Step 103 depositing a first conductive layer 6 on the color film substrate through step 101 or step 102, and forming a first signal line by a patterning process.
- the first conductive layer 6 may be a metal layer or a transparent conductive layer (ITO), or may be formed of other conductive materials; the patterning process may include, for example, a photolithography process, a network printing method, etc., as shown in the figure. Figure 4-1 and Figure 4-2.
- Step 104 depositing a piezoelectric material layer 8 on the color filter substrate of step 103 to form a column spacer bump under the first signal line by a patterning process.
- the patterning process may include, for example, a photolithography process, a network printing process, etc.; the column spacer protrusions are piezoelectric material spacers, as shown in Figures 5-1 and 5-2.
- the piezoelectric material may be a piezoelectric crystal, a piezoelectric ceramic, a piezoelectric polymer or a piezoelectric ceramic/polymer composite.
- the piezoelectric material may be
- piezoelectric polymers or piezoelectric ceramic/polymer composites for example, polyvinylidene fluoride, because such piezoelectric materials are soft, have good molding properties, and are resistant to impact, which can meet the requirements for protrusions as column spacers;
- the piezoelectric voltage constant of such materials is high, and the prepared touch screen has high sensitivity.
- the piezoelectric material column spacer protrusion may be placed above the silicon island of the array substrate, the data signal line, the gate signal line, and the like, and is located under the black matrix 1 of the color filter substrate to avoid the occurrence of the column spacer. Difficulties such as light leakage caused by abnormal deflection of surrounding liquid crystal molecules.
- the support height of the columnar spacer bumps is equal to the desired cell thickness.
- the piezoelectric material column spacer is placed over the overlapping region of the data signal line and the gate signal line as an example, but the embodiment of the present invention is not limited thereto.
- each pixel region includes: a red (R) pixel 2, a green (G) pixel 3 and a blue (B) pixel 4, and three black matrices 1 between the RGB sub-pixels.
- the sub-pixels may further include other pixels, such as yellow pixels or the like, or may have only one black matrix 1.
- the electrically conductive column spacer is raised, for example, a piezoelectric spacer spacer is placed under a black matrix of a plurality of pixel regions.
- a piezoelectric material column spacer protrusion is disposed for each pixel region as an example, but the embodiment of the present invention is not limited thereto.
- Step 105 depositing an insulating layer 5b on the color filter substrate of step 104, as shown in FIG. 6-1; and forming a via hole by a photolithography process to expose the lower surface of the bump of the piezoelectric material column spacer, such as Figure 6-2 shows.
- the insulating layer 5b is deposited in this step to further ensure mutual insulation between the first signal line and the second signal line. If the first signal line and the second signal line are straight lines, the two conductive signal lines do not intersect on the same plane, but only the projection of the first signal line on the lower surface of the piezoelectric material columnar protrusion and the second When the signal lines intersect (or the projection of the second signal line on the upper surface of the convex portion of the piezoelectric material column spacer intersects with the first signal line), it is not necessary to deposit the insulating layer 5b in this step, and directly form the second signal line. , but the process is complicated to implement.
- step 104 and step 105 may be reversed.
- the insulating layer 5b is first deposited on the substrate through step 103, and the first signal line is located through the photolithography process.
- a via hole is formed in the domain, and a piezoelectric material layer 8 is deposited on the substrate, and a piezoelectric material spacer bump is formed at a position of the via hole by a patterning process.
- Step 106 depositing a second conductive layer 7 on the color filter substrate passing through step 105, and forming a second signal line by a patterning process.
- the second conductive layer 7 may be a metal layer or a transparent conductive layer (ITO), or may be formed of other conductive materials; the patterning process may include, for example, a photolithography process, a network printing method, or the like.
- ITO transparent conductive layer
- the second signal line is disposed on a lower surface of the protrusion of the piezoelectric material column spacer, and is discharged in a vertical crossing manner with the first signal line in a lattice shape; the first signal line and the first signal line
- the two signal lines can be located at any position of the pixel area; in order not to affect the normal display area and the aperture ratio, the first signal line and the second signal line can be placed above the gate signal line and the data signal line to facilitate the piezoelectric
- the material column spacer is placed above the overlapping area of the data signal line and the gate signal line, that is, the first signal line is above the gate signal line, and the second signal line is above the data signal line, as shown in FIG. 7-1. And Figure 7-2; or, the first signal line is above the data signal line, and the second signal line is above the gate signal line.
- Step 107 depositing an insulating layer 5c and a common electrode 9 of the color filter substrate on the color filter substrate of step 106.
- the common electrode may or may not be present, as shown in Figure 8, depending on the display mode employed.
- Step 108 applying a liquid crystal molecular alignment layer 10a on the color filter substrate subjected to step 107, as shown in FIG.
- Step 109 The color film substrate passing through step 108 is aligned with the array substrate.
- the array substrate may include a glass substrate Ob, a gate electrode signal line metal layer 11, a gate insulating layer 12, a passivation layer 14, and a liquid crystal molecule alignment layer 10b, as shown in FIG.
- a piezoelectric spacer is used to prepare a column spacer bump to realize a functional integrated display substrate having a high transmittance and a self-providing touch panel, which utilizes
- the piezoelectric effect of the protrusion of the piezoelectric spacer spacer can control the thickness of the liquid crystal cell.
- Step 201 preparing an array substrate.
- a gate signal line metal layer 11, a gate insulating layer 12, a data signal line metal layer 13, a passivation layer 14, a silicon island 15, a pixel electrode layer 16, and the like are formed on the glass substrate Ob.
- the array substrate may include a glass substrate 0b, a gate signal line metal layer 11, a gate insulating layer 12, a data signal line metal layer 13, a passivation layer 14, a silicon island 15 and a pixel electrode layer 16, and the like.
- embodiments of the present invention are not limited thereto, and the corresponding film layers may be increased or decreased according to actual needs, as shown in Figures 12-1 and 12-2.
- Step 202 depositing an insulating layer 5d on the prepared array substrate.
- the insulating layer 5d is deposited in order to prevent the layers having the conductive characteristics on the array substrate from coming into contact with the conductive layers of the subsequently formed signal lines, as shown in FIG.
- Step 203 depositing a first conductive layer 6 on the array substrate passing through step 202 and forming a first conductive signal line by a patterning process.
- the first conductive layer 6 may be a metal layer or a transparent conductive layer (ITO), or may be formed of other conductive materials; the patterning process may include, for example, a photolithography process, a network printing method, etc., as shown in the figure. 14-1 and Figure 14-2.
- ITO transparent conductive layer
- Step 204 depositing a piezoelectric material layer 8 on the array substrate passing through step 203, forming a column spacer bump above the first conductive signal line by a patterning process, as shown in FIG. 15-1 and FIG. 15-2.
- the piezoelectric material may be a piezoelectric crystal, a piezoelectric ceramic, a piezoelectric polymer or a piezoelectric ceramic/polymer composite.
- the piezoelectric material may be, for example, a piezoelectric polymer or a piezoelectric ceramic/polymer composite, such as polyvinylidene fluoride (because such piezoelectric materials are soft, have good forming properties, and are resistant to impact). It can meet the requirements of the protrusion as a column spacer; in addition, the piezoelectric voltage constant of such materials is high, and the prepared touch screen has high sensitivity).
- the piezoelectric material column spacer protrusion may be placed on the silicon island of the array substrate, the data signal line, the gate signal line, etc., and is located under the black matrix of the color filter substrate to avoid the occurrence of the protrusion due to the protrusion of the column spacer. Bad phenomenon such as light leakage caused by abnormal deflection of liquid crystal molecules.
- the support height of the columnar spacer bumps is equal to the desired thickness of the liquid crystal cell.
- the piezoelectric material column spacer is placed over the overlapping region of the data signal line and the gate signal line as an example, but the embodiment of the present invention is not limited thereto.
- a piezoelectric material column spacer protrusion is disposed for each pixel region as an example, but the embodiment of the present invention is not limited thereto.
- one piezoelectric material column spacer protrusion may be distributed in a plurality of pixel regions.
- Step 205 depositing an insulating layer 5e on the array substrate passing through step 204, and forming a via hole by a patterning process (for example, a photolithography process) to expose the upper surface of the protruding portion of the piezoelectric material column spacer, as shown in FIG. 1 and Figure 16-2.
- a patterning process for example, a photolithography process
- step 204 and step 205 in this embodiment may be reversed, as long as the upper surface and the lower surface of the protruding portion of the piezoelectric material column spacer are respectively ensured with the second conductive signal line and the first conductive signal line, respectively.
- step 206 is performed, a second conductive layer 7 is deposited on the array substrate through step 205, and a second conductive signal line is formed by a patterning process.
- the second conductive layer 7 may be a metal layer or a transparent conductive layer (ITO), or may be formed of other conductive materials.
- the second conductive signal line is disposed on the upper surface of the protrusion of the piezoelectric material column spacer, and is discharged in a vertical crossing manner with the first conductive signal line in a lattice shape; the first conductive signal line And the second conductive signal line may be located at any position of the pixel area; in order not to affect the normal display area and the aperture ratio, the first signal line and the second signal line may be placed above the gate signal line and the data signal line, to facilitate
- the piezoelectric material column spacer is placed above the overlapping area of the data signal line and the gate signal line; that is, the first conductive signal line is located above the gate signal line, and the second conductive signal line is located above the data signal line. As shown in FIG. 17-1 and FIG. 17-2; or, the first conductive signal line is located above the data signal line, and the second conductive signal line is located above the gate signal line.
- Step 207 applying a liquid crystal molecular alignment layer 10b on the array substrate subjected to step 206, as shown in FIG.
- Step 208 the array substrate passing through step 207 is aligned with the color filter substrate.
- the color filter substrate may include: a black matrix formed on the glass substrate 0a 1. RGB sub-pixel, common electrode 9 and liquid crystal molecule alignment layer 10a, as shown in FIG.
- the column spacer when there is no operation (no touch condition), since the original height supported by the protrusion of the piezoelectric material column spacer is the thickness of the liquid crystal cell, the column spacer The protrusion is undeformed, and no electrical signal is generated; when the finger or the stylus touches the screen, a downward pressure is applied to the liquid crystal cell, and the piezoelectric material column spacer protrusion is deformed by the pressure perpendicular to the screen direction.
- a display substrate capable of stabilizing the thickness of the liquid crystal cell and realizing the self-providing touch panel which has high transmittance, simple structure, low preparation cost, high precision, long life, and the like. advantage.
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- Theoretical Computer Science (AREA)
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Abstract
Description
Claims
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US13/993,365 US9405143B2 (en) | 2012-04-01 | 2012-12-13 | Liquid crystal panel, liquid crystal display and method for manufacturing the same |
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CN201210096492.XA CN102707470B (zh) | 2012-04-01 | 2012-04-01 | 一种液晶面板、液晶显示器及制造方法 |
CN201210096492.X | 2012-04-01 |
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US9405143B2 (en) | 2016-08-02 |
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