CN106950735B - Touch control display device - Google Patents
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- CN106950735B CN106950735B CN201710095736.5A CN201710095736A CN106950735B CN 106950735 B CN106950735 B CN 106950735B CN 201710095736 A CN201710095736 A CN 201710095736A CN 106950735 B CN106950735 B CN 106950735B
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Classifications
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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
- G02F1/1343—Electrodes
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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
Abstract
The invention discloses a touch display device which comprises a first substrate, a second substrate, a first electrode, a color filter layer, a second electrode, a third electrode, a plurality of first slits and a plurality of second slits. The first electrode is disposed on the first substrate, the second electrode is disposed on the second substrate, and the third electrode is also disposed on the second substrate. The color filter layer is arranged on the first substrate and is positioned between the first electrode and the first substrate. The first slits are formed in the first electrode, and the second slits are formed in the second electrode. The first slits are respectively overlapped with the vertical projection area of the second electrode on the second substrate, and the second slits are respectively overlapped with the vertical projection area of the first electrode on the second substrate.
Description
Technical Field
The invention relates to a touch display device; in particular, to a touch display device with reduced noise and reduced resistive-capacitive load.
Background
Nowadays, many conventional electronic products are gradually changed from conventional keyboards or mice to touch panel-based input devices in order to achieve the purposes of convenience, humanization and lightness. Therefore, the application of the touch function to the display device is becoming the most popular product at present.
Fig. 1 shows a conventional touch display device. The touch display device 1 includes a first substrate 10, a second substrate 20, liquid crystal molecules 30 and supporting pillars 40, wherein the liquid crystal molecules 30 and the supporting pillars 40 are respectively disposed between the first substrate 10 and the second substrate 20, the liquid crystal molecules 30 are used for controlling the transmittance of light, and the supporting pillars 40 are used for maintaining the distance between the first substrate 10 and the second substrate 20. The touch display device 1 further includes a color filter 14, a light shielding structure 12 and an active device layer 22, wherein the color filter 14 and the light shielding structure 12 are disposed on the first substrate 10, and the active device layer 22 is disposed on the second substrate 20. The active device layer 22 can be used to control the rotation direction of the liquid crystal molecules 30, and further match the color distribution of the color filter 14 to achieve the display function.
The touch display device 1 shown in fig. 1 further has a touch structure 16 as a touch function. The touch structure 16 is disposed on the first substrate 10, specifically, the touch structure 16 is disposed on the light shielding structure 12, such that the light shielding structure 12 is located between the first substrate 10 and the touch structure 16. Therefore, the touch structure 16 can be used as a touch function, and the resolution of the display function is not affected. However, in the touch display device 1 of fig. 1, the active device layer 22 has a multi-layer metal structure (not shown) as a metal line for transmitting signals or voltages and an electrode layer for controlling the liquid crystal molecules 30. When the touch display device 1 performs a touch function, whether receiving or transmitting a voltage to the touch structure 16, the touch function is affected by the metal structure of the active device 22, so that the sensitivity of the touch function is reduced.
Disclosure of Invention
The present invention provides a touch display device, which can shield noise to improve touch sensitivity.
Another objective of the present invention is to provide a touch display device, which reduces the resistive-capacitive load to improve the charging/discharging performance of the electrodes.
The touch display device disclosed in an embodiment of the invention includes a first substrate, a second substrate, a first electrode, a color filter layer, a second electrode, a third electrode, a plurality of first slits, and a plurality of second slits. The first electrode is disposed on the first substrate, the second electrode is disposed on the second substrate, and the third electrode is also disposed on the second substrate. The color filter layer is arranged on the first substrate and is positioned between the first electrode and the first substrate. The first slits are formed in the first electrode, and the second slits are formed in the second electrode. The first slits are respectively overlapped with the vertical projection area of the second electrode on the second substrate, and the second slits are respectively overlapped with the vertical projection area of the first electrode on the second substrate.
The touch display device disclosed by the embodiment of the invention comprises a first substrate and a second substrate, wherein the first substrate and the second substrate can define a plurality of pixel areas simultaneously. The plurality of pixel regions respectively comprise a color filter, a shading structure, a first electrode, a plurality of first slits, a second electrode, a plurality of second slits and a third electrode. The color filter is arranged on the first substrate, the shading structure is also arranged on the first substrate, and the shading structure is positioned at the periphery of the color filter layer. The first electrode is disposed on the first substrate and has a plurality of first strip structures and a first peripheral structure, and the plurality of first strip structures are respectively connected to the first peripheral structure. The second electrode is disposed on the second substrate and has a plurality of second stripe structures and second surrounding structures, and the plurality of second stripe structures are respectively connected to the second surrounding structures. The first slits are formed between the first stripe structures or between the first stripe structures and the first peripheral structures, and the second slits are formed between the second stripe structures or between the second stripe structures and the second peripheral structures. The third electrode is arranged on the second substrate. The first slits correspond to the second strip structures in position respectively, and the second slits correspond to the first strip structures in position respectively, so that the first electrode and the second electrode are in complementary shapes.
The touch display device disclosed by the embodiment of the invention comprises a first substrate and a second substrate, wherein the first substrate and the second substrate can define a plurality of pixel areas simultaneously. The plurality of pixel regions may respectively include a color filter layer, a light-shielding structure, a first electrode, a second electrode, and a third electrode. The color filter layer is arranged on the first substrate, and the third electrode is arranged on the second substrate. The shading structure is arranged on the first substrate and is positioned on the periphery of the color filter layer. The first electrode is arranged on the first substrate and provided with a plurality of first strip-shaped structures. The second electrode is arranged on the second substrate and has a plurality of second strip structures. The plurality of first strip-shaped structures are respectively positioned between every two adjacent second strip-shaped structures.
Drawings
Fig. 1 is a side view of a conventional touch display device;
FIG. 2 is a side view of a touch display device according to an embodiment of the invention;
FIG. 3a is a top view of a first electrode of a touch display device according to an embodiment of the invention;
FIG. 3b is a top view of a second electrode of the touch display device according to an embodiment of the invention;
FIG. 3c is a top view of a third electrode of the touch display device according to an embodiment of the invention;
fig. 3d is a top view of the first electrode, the second electrode and the third electrode of the touch display device according to the embodiment of the invention;
fig. 4a is a partial side view of a first electrode and a second electrode of a touch display device according to an embodiment of the invention;
fig. 4b is a partial side view of a first electrode and a second electrode of a touch display device according to another embodiment of the invention;
fig. 4c is a partial side view of a first electrode and a second electrode of a touch display device according to another embodiment of the invention;
FIG. 5a is a top view of a first electrode of a touch display device according to another embodiment of the present invention;
FIG. 5b is a top view of a second electrode of a touch display device according to another embodiment of the present invention;
fig. 5c is a top view of a first electrode of a touch display device according to another embodiment of the invention.
Description of the symbols
1. 100 touch display device
10. 110 first substrate
12. 112 light shielding structure
14. 114 color filter layer
16. 116 touch control structure
18. 118 flat layer
20. 130 second substrate
22 active device layer
30. 150 display element layer
40 support column
120. 220a, 220b first electrode
122. 222a, 222b first strip structure
124. 224a, 224b first peripheral structure
126. 226a, 226b first slit
132 insulating layer
134 data line
136 protective layer
138 gate line
140. 240 second electrode
142. 242 second stripe structure
144. 244 second perimetral structure
146. 246 second slit
160 third electrode
Detailed Description
Referring to fig. 2, fig. 2 is a side view of a touch display device according to an embodiment of the invention. The touch display device 100 includes a first substrate 110, a second substrate 130, a display device layer 150, a light shielding structure 112, a color filter 114, and a touch structure 116, wherein the display device layer 150 is sandwiched between the first substrate 110 and the second substrate 130. In the present embodiment, the display element layer 150 may be composed of liquid crystal molecules, electrophoretic molecules …, etc., and only the position of the display element layer 150 is indicated in order to clearly show the molecular composition of the display element layer without drawing. In the present embodiment, the light shielding structure 112 and the color filter 114 are respectively disposed on the first substrate 110, and the touch structure 116 is located on the light shielding structure 112. In detail, the light shielding structure 112 may be a mesh structure, and the color filter 114 is located between the mesh structures of the light shielding structure 112, such that the color filter 114 and the light shielding structure 112 are disposed adjacently. For example, the color filter 114 may be a red, green and blue organic material to serve as three primary colors of display, and the light-shielding structure 112 is a black organic material to prevent the color filters of different colors from interfering with each other, but the invention is not limited thereto, the color filter 114 may also be made of other colors, such as white and yellow materials, which can be designed to have desired colors according to different requirements, and the light-shielding structure 112 may also be made of gray materials, metal chromium, and other materials to achieve the effects of blocking interference and shielding light of adjacent color filters.
In the embodiment shown in fig. 2, the touch structure 116 is located on the light shielding structure 112, such that the touch structure 116 and the light shielding structure 112 are overlapped with each other. Specifically, the vertical projection areas of the touch structure 116 and the light shielding structure 112 on the first substrate 110 are overlapped with each other. The touch structure 116 is made of a conductive material, and when a user performs a touch operation, the capacitance of the touch structure 116 is changed, and the touch position can be known by detecting the capacitance change condition to perform an instruction. In the present embodiment, the touch structure 116 may be formed of metal, metal oxide or alloy, such as gold (Au), copper (Cu), and Indium-tin-oxide (ITO). Since the material used for the touch structure 116 is easily reflected or refracted by light, the touch structure 116 may affect the vision of the user, and therefore, the touch structure 116 is disposed on the light shielding structure 112, so as to shield the light generated by the touch structure 116, thereby optimizing the display function. In addition, the touch display device 100 further includes a planarization layer 118, and the planarization layer 118 is disposed on the first substrate 110. In detail, the planarization layer 118 covers the color filter layer 114 and the touch structure 116 to prevent the color filter layer 114 from being contaminated or the touch structure 116 from being oxidized. However, the invention is not limited thereto, and the planarization layer 118 may also cover the light-shielding structure 112 for protection or planarization according to different design and manufacturing process requirements.
The touch display device 100 further includes an active device, a gate line, a data line 134, a second electrode 140 and a third electrode 160, wherein the active device is a thin film transistor having a gate electrode electrically connected to the scan line, a drain electrode electrically connected to the data line and a source electrode electrically connected to the third electrode 160. The scan lines are used to control the active devices to be turned on or off, and the data lines 134 transmit data signals to the third electrodes 160, so as to control the rotation angle of the display device layer 150. In the present embodiment, the second electrode 140 is a common electrode, and the third electrode 160 is a pixel electrode, such that the data line 134 is electrically connected to the third electrode 160, and the common voltage is transmitted to the second electrode 140. However, the invention is not limited thereto, and in another modification, the second electrode 140 may be a pixel electrode, and the third electrode 160 may be a common electrode.
In the embodiment of fig. 2, the touch display device 100 further includes an insulating layer 132 and a protection layer 136, wherein the insulating layer 132 is located between the second substrate 130 and the third electrode layer 160, and the protection layer 136 is located between the second electrode 140 and the third electrode layer 160. The insulating layer 132 may be a gate insulating layer of an active device, for example, the insulating layer 132 is an inorganic insulating material such as silicon oxide, silicon nitride or silicon oxynitride, or an organic insulating material, but not limited thereto. The protection layer 136 may be an inorganic insulating material (e.g., silicon oxide, silicon nitride, silicon oxynitride, or other suitable insulating materials), an organic insulating material (e.g., colorless/colored photoresist, polyimide, polyester, benzocyclobutene (BCB), polymethyl methacrylate (PMMA), polyvinyl phenol (PVP), polyvinyl alcohol (PVA), Polytetrafluoroethylene (PTFE), or other suitable insulating materials, but is not limited thereto. In the embodiment of fig. 2, the insulating layer 132 and the protection layer 136 are both a single-layer structure, but the invention is not limited thereto, and the insulating layer 132 or the protection layer 136 may also be a multi-layer structure according to different design and manufacturing process requirements.
In the present embodiment, the data line 134 and the third electrode 160 are alternately disposed on the insulating layer 132. In particular, the data line 134 is made of a metal material, and other conductive materials may be used, such as: an alloy, a nitride of a metal material, an oxide of a metal material, an oxynitride of a metal material, or a stacked layer of a metal material and other conductive materials. The third electrode 160 is also made of a metal material, and may also be made of a transparent conductive material, such as Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO). In the present embodiment, the data line 134 and the third electrode 160 are patterned by using different photomasks, but in another modification, the data line 134 and the third electrode 160 may be formed by using the same photomask. Similarly, the second electrode 140 is made of a metal material, or a transparent conductive material, such as Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO).
Referring to fig. 2, in the touch display device 100, a plurality of first slits 126 are formed in the first electrode 120, a plurality of second slits 146 are formed in the second electrode 140, and the first slits 126 and the second slits 146 are respectively arranged in a staggered manner. In other words, the first slits 126 are respectively overlapped with the vertical projection areas of the second electrode 140 on the second substrate 130, and the second slits 146 are also respectively overlapped with the vertical projection areas of the first electrode 120 on the second substrate 130.
In the touch display device 100, the first substrate 110 and the second substrate 130 can define a plurality of pixel regions at the same time, and fig. 3a, fig. 3b and fig. 3c are top views of the first electrode, the second electrode and the third electrode in a single pixel region, and each pixel region is composed of the above-mentioned structures of each layer, which is not repeated herein. Specifically, as shown in fig. 3a, the first electrode 120 has a plurality of first stripe structures 122 and a first peripheral structure 124, and the plurality of first stripe structures 122 are respectively connected to the first peripheral structure 124. In the present embodiment, the first peripheral structure 124 is a closed structure, for example, the first peripheral structure 124 may be similar to a square. The first stripe structures 122 have the same shape and are sequentially arranged in the first periphery structure 124. In other words, each of the plurality of first stripe structures 122 has two ends respectively connected to the first circumferential structures 124, and a gap is formed between every two adjacent first stripe structures 122, such that the first narrow gap 126 is formed between every two adjacent first stripe structures 122. Meanwhile, a gap is also formed between the outermost first stripe structure 122 of the plurality of first stripe structures 122 and the first circumferential structure 124, so that the first slit 126 is also formed between the first stripe structure 122 and the first circumferential structure 124. Similarly, referring to fig. 3b, the second electrode 140 has a plurality of second bar structures 142 and second periphery structures 144, the second bar structures 142 are respectively connected to the second periphery structures 144, and a plurality of second slits 146 are respectively formed between two adjacent second bar structures 142 and between the second bar structures 142 and the second periphery structures 144.
Referring to fig. 2, fig. 3a and fig. 3b, when viewed in a direction perpendicular to the second substrate 130, the first slits 126 are respectively located corresponding to the second stripe structures 142, and the second slits 146 are respectively located corresponding to the first stripe structures 122, such that the first slits 126 and the second slits 146 are disposed in a staggered manner, and the first stripe structures 122 and the second stripe structures 142 are also disposed in a staggered manner. Therefore, the first electrode 120 and the second electrode 140 are complementary in shape, that is, the first slit 126 between two adjacent first stripe structures 122 can correspond to one of the second stripe structures 142, and the second slit 146 between two adjacent second stripe structures 142 can correspond to one of the first stripe structures 122, so that when the first electrode 120 and the second electrode 140 are overlapped, a substantially complete single electrode shape can be formed.
Referring to fig. 3c, in the single pixel of the present embodiment, the third electrode 160 is a complete single electrode shape, i.e., no slit is formed in the third electrode 160. After the first electrode 120, the second electrode 140 and the third electrode 160 are overlapped, the shape of the single electrode formed by the first electrode 120 and the second electrode 140 with complementary shapes is substantially the same as that of the third electrode 160. Referring to fig. 3d, fig. 3d is a top view of a single pixel region where a first electrode, a second electrode and a third electrode are overlapped. From fig. 3d, it can be understood that the first electrode 120 and the second electrode 140 with complementary shapes can cover the complete shape of the third electrode 160. Referring again to the embodiment of fig. 2, the first electrode 120 and the second electrode 140 are both connected to a common voltage, so that the first electrode 120 and the second electrode 140 are at the same level, and a shielding metal layer is formed. In detail, the first electrode 120 and the second electrode 140 with two complementary shapes cover the third electrode 160, and on the vertical projection of the second substrate 130, the area formed by the first electrode 120 and the second electrode 140 with two complementary shapes overlaps the third electrode 160. Therefore, the first electrode 120 and the second electrode 140 can completely shield the noise from the third electrode 160 affecting the touch structure 116, thereby improving the touch sensitivity. In addition, the first peripheral structure of the first electrode 120 also covers the gate line 138, so that the first electrode 120 is located between the gate line 138 and the touch structure (not shown). Similarly, the second surrounding structure of the second electrode 140 also covers the data line 134, such that the second electrode 140 is located between the data line 134 and the touch structure (not shown). Therefore, the first electrode 120 can shield the noise generated from the gate line 138, and the second electrode 140 can block the noise generated from the data line 134, so that the sensitivity of touch sensing can be improved. In addition, referring to fig. 2, the patterned first electrode 120 can reduce an overlapping area between the first electrode 120 and the touch structure 116, so that a resistance-capacitance load (RC Loading) between the first electrode 120 and the touch structure 116 is reduced, and charging and discharging speeds of the two electrodes are accelerated.
In the present embodiment, the display device layer 150 can be a negative-type liquid crystal molecule to avoid the problem of light leakage. The display element layer 150 is disposed between the first electrode 120 and the second electrode 140 with complementary shapes, and in detail, when the liquid crystal molecules are disposed between the first stripe structure 122 and the second stripe structure 142 which are adjacent to each other and are alternately disposed, the liquid crystal molecules may be disorderly arranged, and a local light leakage or a local dark state may occur. Therefore, when the negative-type liquid crystal molecules are used as a display medium, the occurrence of dark lines or bright lines can be avoided.
Referring to fig. 4a, fig. 4b, and fig. 4c, fig. 4a, fig. 4b, and fig. 4c are partial side views of a first electrode and a second electrode according to different embodiments, respectively. The width of the first stripe structure 122 of the first electrode 120 is W1, the width of the second stripe structure 142 of the second electrode 140 is W2, and the widths W1 and W2 are calculated by the lengths of the first stripe structure and the second stripe structure in the arrangement direction, respectively. Similarly, the gap between every two adjacent first stripe structures 122 is S1 (i.e. the width of the first slit), and the gap between every two adjacent second stripe structures 142 is S2 (i.e. the width of the second slit). In the embodiment of fig. 4a, the gap S1 is equal to the width W2, and the gap S2 is equal to the width W1, so that the first electrode 120 and the second electrode 140 with complementary shapes can shield the interference from the third electrode 160, and the overlapping area of the first electrode 120 and the touch structure in the vertical direction can be avoided to reduce the rc load. In the embodiment of fig. 4b, the gap S1 is greater than the width W2, and the gap S2 is greater than the width W1, so that the first stripe structures 122 of the first electrodes 120 and the second stripe structures 142 of the second electrodes 140 have no overlapping area in the vertical direction. In the embodiment of fig. 4c, the gap S1 is smaller than the width W2, and the gap S2 is smaller than the width W1, although the first stripe structure 122 and the second stripe structure 142 have a slightly overlapping area in the vertical direction, but a better interference shielding effect can be achieved.
Referring to fig. 5a and 5b, fig. 5a and 5b are top views of a first electrode and a second electrode, respectively, according to another embodiment. The first electrode 220a of the present embodiment has a plurality of first stripe structures 222a and a first peripheral structure 224a, and the first stripe structures 222a are respectively connected to the first peripheral structure 224 a. In contrast to the above-mentioned embodiment, the first peripheral structure 224a of the present embodiment is shaped like a closed Chinese character ri, and the plurality of first stripe structures 222a are arranged in two rows, as shown in fig. 5 a. Similarly, a plurality of first slits 226a are formed between two adjacent first stripe structures 222a and simultaneously formed between the first stripe structures 222a and the first peripheral structure 224 a. Referring to fig. 5b, fig. 5b is a top view of the second electrode, and fig. 5a and 5b are a first electrode 220a and a second electrode 240 with complementary shapes, respectively. Compared to the above embodiments, the second peripheral structure 244 of the present embodiment is shaped like a closed Chinese character ri, and the plurality of second bar-shaped structures 242 are arranged in two rows and connected to the second peripheral structures 224 respectively. Similarly, a plurality of second slits 246 are formed between two adjacent second stripe structures 242 and are simultaneously formed between the second stripe structures 242 and the second peripheral structures 244. As shown in fig. 5a and 5b, the first electrode 220a and the second electrode 240 are complementary in shape to each other. Specifically, when the first electrode 220a and the second electrode 240 overlap each other, the first slits 226a may correspond to the second stripe structures 242 or the second peripheral structures 244, respectively, and the second slits 246 may correspond to the first stripe structures 222a or the first peripheral structures 224a, respectively. In this way, when the first electrode 220a and the second electrode 240 are vertically projected on the second substrate, the first stripe structures 222a can be located on two adjacent second stripe structures 242, so that the first stripe structures 222a and the second stripe structures 242 can be staggered, and the first electrode 220a and the second electrode 240 are overlapped to form a complete shape. In the embodiment, the complete shape of the first electrode 220a and the second electrode 240 with complementary two pairs of shapes, which are overlapped, can shield the noise of the touch structure caused by the complete shape of the third electrode, and can also reduce the overlapping area between the touch structure and the touch structure to reduce the resistance capacitance load (RCLoading).
Referring to fig. 5c, fig. 5c is a top view of a first electrode according to another embodiment, and fig. 5b and fig. 5c illustrate a second electrode 240 and a first electrode 220b having complementary shapes, respectively. Compared to the first electrode 220a shown in fig. 5a, the first peripheral structure 224b of the first electrode 220b of the present embodiment is shaped like a square, and the plurality of first stripe structures 222b are arranged in a single row and connected to the first peripheral structure 224 b. Similarly, as shown in fig. 5c and 5b, the first electrode 220b and the second electrode 240 have complementary shapes. Specifically, when the first electrode 220b and the second electrode 240 overlap each other, the first slits 226b may correspond to the second stripe structures 242 or the second peripheral structures 244, respectively, and the second slits 246 may correspond to the first stripe structures 222b or the first peripheral structures 224b, respectively. In this way, when the first electrode 220b and the second electrode 240 are vertically projected on the second substrate, the first stripe structures 222b can be located on two adjacent second stripe structures 242, so that the first stripe structures 222b and the second stripe structures 242 can be staggered, and the first electrode 220b and the second electrode 240 are overlapped to form a complete shape. In the present embodiment, the first peripheral structure 224b of the first electrode 220b is similar to a Chinese character ri, and the second peripheral structure 242 of the second electrode 240 is similar to a Chinese character kou, so that when the first electrode 220b and the second electrode 240 are overlapped, the overlapping area of the two electrodes in the vertical direction is smaller. In the embodiments of fig. 5a and 5b, the widths of the first slits 226a may be the same or different, and the widths of the second slits 246 may be the same or different according to different requirements and designs. Meanwhile, the width relationship among the first stripe structures 222a, the second stripe structures 242, the first slits 226 and the second slits 246 can also be designed and composed with reference to fig. 4a, 4b and 4c, which is not repeated herein. Similarly, in the embodiments of fig. 5b and 5c, the width relationships among the first stripe structures 222a, the second stripe structures 242, the first slits 226 and the second slits 246 can be the same, different or various combinations according to different designs and requirements.
According to the touch display device of the embodiment, the first electrode and the second electrode which are complementary in shape are used for shielding noise and improving touch sensitivity. In addition, the patterned first electrode can reduce the overlapping area with the touch structure in the vertical direction, thereby reducing the resistance-capacitance load.
Although the present invention has been described in connection with the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art may make various changes and modifications without departing from the spirit and scope of the invention.
Claims (9)
1. A touch display device, comprising:
a first substrate;
a second substrate;
a first electrode disposed on the first substrate;
a plurality of first slits formed in the first electrode;
a color filter layer arranged on the first substrate and between the first electrode and the first substrate;
a second electrode disposed on the second substrate;
a plurality of second slits formed in the second electrode;
a third electrode disposed on the second substrate; and
a light shielding structure and a touch control structure,
wherein the first slits are respectively overlapped with the vertical projection area of the second electrode on the second substrate, and the second slits are respectively overlapped with the vertical projection area of the first electrode on the second substrate,
the shading structure is arranged on the first substrate, the shading structure and the color filter layer are adjacent to each other, the touch control structure is located on the shading structure, the first electrode and the second electrode are complementary structures, and the first electrode and the second electrode are respectively electrically connected to a common voltage.
2. The touch display device of claim 1, further comprising:
a flat layer disposed on the first substrate and between the color filter layer and the first electrode;
a display element layer sandwiched between the first substrate and the second substrate;
the insulating layer is arranged on the second substrate and is positioned between the third electrode and the second substrate; and
and the protective layer is arranged on the second substrate and is positioned between the second electrode and the third electrode.
3. A touch display device, comprising:
a first substrate; and
a second substrate, wherein the first substrate and the second substrate can define a plurality of pixel regions simultaneously, and the pixel regions respectively comprise:
a color filter disposed on the first substrate;
the shading structure is arranged on the first substrate and is positioned at the periphery of the color filter;
the first electrode is arranged on the first substrate and provided with a plurality of first strip-shaped structures and a first peripheral structure, and the first strip-shaped structures are respectively connected with the first peripheral structure;
a plurality of first slits formed between the first strip structures or between the first strips and the first peripheral structure;
the second electrode is arranged on the second substrate and provided with a plurality of second strip-shaped structures and a second peripheral structure, and the second strip-shaped structures are respectively connected with the second peripheral structure;
a plurality of second slits formed between the second stripe structures or between the second stripe structures and the second surrounding structures;
a third electrode disposed on the second substrate; and
a light shielding structure and a touch control structure,
wherein the first slits are respectively corresponding to the second strip structures, and the second slits are respectively corresponding to the first strip structures, so that the first electrode and the second electrode are complementary,
the shading structure is arranged on the first substrate, the shading structure and the color filter layer are adjacent to each other, the touch structure is located on the shading structure, and the first electrode and the second electrode are electrically connected to a common voltage respectively.
4. The touch display device of claim 3, wherein the third electrode is a full shape.
5. The touch display device of claim 3, wherein a vertical projection of the first electrode and the second electrode on the second substrate has a shape substantially the same as a vertical projection of the third electrode on the second substrate.
6. The touch display device of claim 3, wherein an area formed by vertical projections of the first electrode and the second electrode on the second substrate overlaps the third electrode.
7. A touch display device, comprising:
a first substrate; and
a second substrate, wherein the first substrate and the second substrate can define a plurality of pixel regions simultaneously, and the pixel regions respectively comprise:
a color filter disposed on the first substrate;
the shading structure is arranged on the first substrate and is positioned at the periphery of the color filter;
the first electrode is arranged on the first substrate and provided with a plurality of first strip-shaped structures;
the second electrode is arranged on the second substrate and is provided with a plurality of second strip-shaped structures;
the third electrode is arranged on the second substrate, wherein the first strip-shaped structures are respectively positioned between every two adjacent second strip-shaped structures; and
a light shielding structure and a touch control structure,
the shading structure is arranged on the first substrate, the shading structure and the color filter layer are adjacent to each other, the touch control structure is located on the shading structure, the first electrode and the second electrode are complementary structures, and the first electrode and the second electrode are respectively electrically connected to a common voltage.
8. The touch display device of claim 7, wherein the first electrode further comprises first periphery structures, the first bar structures are respectively connected to the first periphery structures, and the second electrode further comprises second periphery structures, the second bar structures are respectively connected to the second periphery structures.
9. The touch display device of claim 7, further comprising a plurality of first slits and a plurality of second slits, wherein the first slits are respectively formed between two adjacent first stripe structures, and the second slits are respectively formed between two adjacent second stripe structures.
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| Application Number | Priority Date | Filing Date | Title |
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| TW105141478A TWI596527B (en) | 2016-12-14 | 2016-12-14 | Touch display |
| TW105141478 | 2016-12-14 |
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| CN108920029A (en) * | 2018-06-28 | 2018-11-30 | 信利光电股份有限公司 | A kind of novel OGS touch screen and electronic equipment |
| CN109164940B (en) * | 2018-10-08 | 2021-08-06 | 业成科技（成都）有限公司 | Touch display device and manufacturing method thereof |
| US11740706B2 (en) | 2020-05-11 | 2023-08-29 | Darfon Electronics Corp. | Keyboard touch electrode module and touch keyboard therewith |
| CN113641249B (en) * | 2020-05-11 | 2024-04-02 | 重庆达方电子有限公司 | Touch keyboard and keyboard touch electrode module thereof |
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| CN204347792U (en) * | 2015-01-07 | 2015-05-20 | 宇昶半导体股份有限公司 | The contact panel of noise can be reduced |
| CN104793777A (en) * | 2014-01-17 | 2015-07-22 | 胜华科技股份有限公司 | Touch panel and touch display device |
| CN105446566A (en) * | 2012-09-21 | 2016-03-30 | 友达光电股份有限公司 | Capacitive touch panel |
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| JP2013140190A (en) * | 2010-04-21 | 2013-07-18 | Sharp Corp | Display device |
| CN103294246B (en) * | 2012-07-20 | 2016-03-16 | 上海天马微电子有限公司 | Touch display panel |
| KR102015015B1 (en) * | 2012-11-30 | 2019-08-28 | 삼성디스플레이 주식회사 | Liquid crystal display |
| TWI483157B (en) * | 2013-04-23 | 2015-05-01 | Au Optronics Corp | Touch panel and touch display panel |
| KR102261761B1 (en) * | 2013-12-12 | 2021-06-07 | 삼성디스플레이 주식회사 | Display device |
| CN104733477B (en) * | 2015-04-01 | 2018-04-13 | 上海天马微电子有限公司 | Array base palte and preparation method thereof, display panel, display device |
| TWI562042B (en) * | 2015-10-21 | 2016-12-11 | Focaltech Systems Co Ltd | Touch display device and drivinig method thereof |
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| CN105446566A (en) * | 2012-09-21 | 2016-03-30 | 友达光电股份有限公司 | Capacitive touch panel |
| CN104793777A (en) * | 2014-01-17 | 2015-07-22 | 胜华科技股份有限公司 | Touch panel and touch display device |
| CN204347792U (en) * | 2015-01-07 | 2015-05-20 | 宇昶半导体股份有限公司 | The contact panel of noise can be reduced |
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| TWI596527B (en) | 2017-08-21 |
| CN106950735A (en) | 2017-07-14 |
| TW201821957A (en) | 2018-06-16 |
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