CN103677411A - Touch display device and manufacture method thereof - Google Patents
Touch display device and manufacture method thereof Download PDFInfo
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- CN103677411A CN103677411A CN201310656070.8A CN201310656070A CN103677411A CN 103677411 A CN103677411 A CN 103677411A CN 201310656070 A CN201310656070 A CN 201310656070A CN 103677411 A CN103677411 A CN 103677411A
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Abstract
The invention discloses a touch display device and a manufacture method of the touch display device. The touch display device comprises touch layers and a blocking layer, wherein each touch layer comprises an electrode area and an etching area, each electrode area comprises touch electrodes and induction electrodes, the touch electrodes and the induction electrodes are arranged in a staggered mode, gaps between the touch electrodes and the induction electrodes form the etching areas, the blocking layer is arranged opposite to the touch layers, the positions, corresponding to the electrode areas, of the blocking layer have first light transmittance, the positions, corresponding to the etching areas, of the blocking layer have second light transmittance, and the difference between the first light transmittance and the second light transmittance is located within a preset threshold range. The blocking layer which has the first light transmittance and the second light transmittance is arranged on the position opposite to the touch layers, due to the fact that the positions, corresponding to the electrode areas and the etching areas, of the blocking layer have different magnitudes of light transmittance, the graph boundary display conditions caused by the different magnitudes of light transmittance of the positions, corresponding to the electrode areas and the non-electrode areas, of the blocking layer are reduced, and the touch display device is made to have better optical display performance.
Description
Technical field
The present invention relates to field of display devices, particularly relate to a kind of touch control display apparatus and manufacture method thereof.
Background technology
As take thin film transistor (TFT) as control element, liquid crystal is that the O-E Products that integrates large-scale semiconductive integrated circuit and dull and stereotyped light source technology of medium---Thin Film Transistor-LCD is with its low-power consumption, be convenient for carrying, the advantages such as usable range is wide, high-quality become main flow display of new generation.
In display device, in order to allow user associative operation can be carried out when watching picture, adopt contact type panel.Touch display screen is by one of input and the integrated important carrier of outlet terminal; By measuring the coordinate position of touch point on display screen, can learn toucher's intention according to the displaying contents of respective coordinates point on display screen or figure, thereby carry out associative operation.At present, touch display panel is additional one deck touch control layer on the basis of display panel normally, or touch control layer is directly prepared at display panel outside surface, or is integrated in display panel inside.At present, touch controllable function mainly or bipolar electrode spaced apart by the unidirectional electrode transparent electrode pattern of form such as be interspersed realize the sensing of plane X axle and Y-axis coordinate data confirmed.
Above-mentioned touch-control electrode pattern adopts transparent conductive film conventionally as ITO(tin indium oxide) material film carries out lithographic method and forms; Take unidirectional electrode as example, and its electrode district and etched area are as shown in Figure 1; Take bipolar electrode as example, and its electrode district and etched area are as shown in Figure 2.In order to prevent short-circuit conditions, between adjacent electrode, need to have certain spacing, thereby electrode pattern layer comprises electrode district (transparent conductive film layer district) and etched area (without conductive film layer district), as shown in Figure 3; Because the film layer structure in above-mentioned twoth district is different, the light in process Zhe Liang district is subject to different refractive indexes, light path there are differences, thereby on display surface, user can observe the boundary line in above-mentioned Liang Ge district, has reduced the display quality of picture.
In prior art, realize the touch control layer of touch controllable function owing to there is electrode district and etched area, form different light transmission rates interval, on display surface, form the boundary line in Liang Ge district, affect display quality.Although have relevant technology, as in etched area, insert identical refractive index conductive transparent material, increase high refractive index layer, adopt the schemes such as the tangent design in border to reduce the display effect in electrode boundary line; But these schemes have increased existing process mostly, improved preparation difficulty.
Summary of the invention
In order to solve the electrode district of existing touch control display apparatus and the boundary line that etched area forms Liang Ge district on display surface, affect display quality.
The technical solution used in the present invention is: a kind of touch control display apparatus, comprising:
Touch control layer, comprises electrode district and etched area, and described electrode district comprises touch-control electrode and induction electrode arranged in a crossed manner, the formation etched area, space between described touch-control electrode and induction electrode;
Restraining barrier, be oppositely arranged with described touch control layer, corresponding position, Yu electrode district, described restraining barrier has the first transmittance, and corresponding position, Yu etched area, described restraining barrier has the second transmittance, and the difference of described the first transmittance and the second transmittance is in predetermined threshold range.
The present invention also provides a kind of manufacture method of touch control display apparatus, comprising:
Form touch control layer, described touch control layer comprises electrode district and etched area, and described electrode district comprises touch-control electrode and induction electrode arranged in a crossed manner, the formation etched area, space between described touch-control electrode and induction electrode;
Form restraining barrier, described restraining barrier and described touch control layer are oppositely arranged, corresponding position, Yu electrode district, described restraining barrier has the first transmittance, corresponding position, Yu etched area, described restraining barrier has the second transmittance, and the difference of described the first transmittance and the second transmittance is in predetermined threshold range.
The invention has the beneficial effects as follows: the present invention is provided with the restraining barrier that comprises the first transmittance and the second transmittance in the position relative with touch control layer, the difference of described the first transmittance and the second transmittance is in predetermined threshold range, the first transmittance is corresponding with electrode district, the second transmittance is corresponding with etched area, because electrode district and etched area relative position are provided with different transmittances, thereby reduce the different caused graphic limits of Yu Fei electrode district, electrode district light transmission rate, show situation, make touch display unit there is better optics display performance.
Accompanying drawing explanation
Fig. 1 prior art unidirectional electrode touch control layer structural representation;
Fig. 2 prior art bipolar electrode touch control layer structural representation;
Fig. 3 prior art touch control layer electrode district and etched area cross section structure schematic diagram;
Fig. 4 is the structural representation of the touch control display apparatus of the first embodiment of the present invention;
Fig. 5 is the structural representation of the touch control display apparatus of the second embodiment of the present invention;
Fig. 6 is the structural representation of the touch control display apparatus of the third embodiment of the present invention;
The mode that Fig. 7 adopts exposure completely to add partial etching realizes the structural representation of the electrode district thicknesses of layers different from etched area;
Fig. 8 adopts the mode of HTM to realize the structural representation of the electrode district thicknesses of layers different from etched area;
Fig. 9 adopts touch-control electrode optical mask plate and reflexive photoresist scheme to realize the structural representation of the electrode district photoresist different with etched area.
Embodiment
For technical matters, technical scheme and advantage that embodiments of the invention will be solved are clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
As shown in Figure 4, be the structural representation of the touch control display apparatus of the first embodiment of the present invention, this touch control display apparatus comprises:
Restraining barrier 3, be oppositely arranged with described touch control layer, corresponding position, Yu electrode district, described restraining barrier has the first transmittance, and corresponding position, Yu etched area, described restraining barrier has the second transmittance, and the difference of described the first transmittance and the second transmittance is in predetermined threshold range.
The present invention is provided with the restraining barrier that comprises the first transmittance and the second transmittance in the position relative with touch control layer, the difference of described the first transmittance and the second transmittance is in predetermined threshold range, the first transmittance is corresponding with electrode district, the second transmittance is corresponding with etched area, because electrode district and etched area relative position are provided with different transmittances, thereby reduce the different caused graphic limits of Yu Fei electrode district, electrode district light transmission rate, show situation, make touch display unit there is better optics display performance.
Touch control display apparatus of the present invention can be embedded touching device or external hanging type touching device, embedded touching device is to utilize electrode wires on liquid crystal display as touch-control electrode and induction electrode, and external hanging type touching device arranges touch-control circuit and realizes on liquid crystal display.For embedded touching device and external hanging type touching device, can apply.
Restraining barrier of the present invention can be the one deck increasing separately at touch layer relative position, or utilizes the rete of display device itself to arrange, and can be common electrode layer or back side conductive film layer.Some display device need to arrange common electrode layer on one of them at the two substrates that forms liquid crystal cell, thereby and form the vertical electric field perpendicular to liquid crystal cell face between the pixel electrode on opposition substrate, reach the object of controlling liquid crystal, for this reason, can utilize common electrode layer as restraining barrier.In some display device, because of its plane liquid crystal rotational display mode, on color membrane substrates, by liquid crystal side, there is no transparent conductive material, easy accumulation static, shows that the situation such as abnormal produces thereby cause, so this series products can add layer of transparent conductive material in color lamina membranacea outside and by its ground connection conventionally, reach the effect that prevents electrostatic accumulation, this layer is back side conductive film layer, for this reason, and can be using back side conductive film layer as restraining barrier.
Again consult Fig. 4, the present embodiment also comprises a substrate 1, and described touch control layer 2 is arranged on the first side of described substrate, and described restraining barrier 3 is arranged on the second side of described substrate 1, the second place 32 on described restraining barrier has than the projection of the high H of primary importance, and this projection is towards the side away from substrate.Certainly, described touch control layer 2 and restraining barrier 3 can be arranged on the homonymy of substrate, are also provided with one or more in pixel layer, black matrix between described restraining barrier and substrate.Restraining barrier can directly be prepared at substrate surface; Or between restraining barrier and substrate surface, have other material layer, as colour element layer, black matrix layer etc.; Restraining barrier can with the same surface of touch control layer at substrate, also can be positioned at respect to touch control layer the opposite side of substrate; And order does not limit between above-mentioned various material layer, can need to regulate according to design.
Restraining barrier of the present invention has the first transmittance and the second transmittance, can adopt thickness different, or adopt different materials.The restraining barrier 3 of the present embodiment comprises primary importance 31 and the second place 32, primary importance 31 is corresponding with the electrode district of touch control layer, the second place 32 is corresponding with the etched area of touch control layer, the thickness of the second place 32 is greater than the thickness of primary importance 31, the thickness of both thickness difference H and electrode district in threshold range, make to see through after common electrode layer through the first light of electrode district and through the transmitance of the second light of etch areas in threshold range.
The restraining barrier of the present embodiment has the first thickness and second thickness not identical with the first thickness, make public electrode form projection, can reduce the resistance of public electrode, thereby reduce the ill-effect of signal delay, do not need existing technology flow process to carry out too much change, there is stronger practicality.
In the present embodiment there is corresponding relation in the thickness difference of restraining barrier Liang Ge position and the thickness of electrode district, and exist and contact with material.The material on described restraining barrier is identical from the material of described electrode zone or different, when material is identical, the thickness difference of Liang Ge position, described restraining barrier is identical with the thickness A of described electrode zone, thereby reaches the relation of rete and light path complete complementary, eliminates light transmission rate difference; When material is not identical, described restraining barrier is determined according to the light penetration of electrode zone and etch areas at the thickness difference of the first transmittance position and the second transmittance position, the relation that can be inversely proportional to according to light transmission rate and thicknesses of layers calculates the transmitance difference of electrode district and etched area, thereby further confirms required difference in height between thin and thick district, restraining barrier according to transmitance difference.
As shown in Figure 5, structural representation for the touch control display apparatus of the second embodiment of the present invention, the touch control display apparatus of this embodiment and the first embodiment are basic identical, and difference is: the second place 32 has than the projection of the high H of primary importance, and this projection is near a side of substrate.The projection of the second place can, towards substrate-side setting, also can, away from substrate one side setting, can also respectively be provided with in both sides part projection.
As shown in Figure 6, structural representation for the touch control display apparatus of the third embodiment of the present invention, the touch control display apparatus of this embodiment and the first embodiment are basic identical, difference is: primary importance 31 is for having the material of the first transmittance, the second place 32 is for having the material of the second transmittance, and the thickness of primary importance 31 is identical or different from the thickness of the second place 32.Because the transmittance of primary importance and material that the second place adopts is different, make the light transmittance of the etched area corresponding from adopting material and electrode district different, thereby can reduce the different caused graphic limits of Yu Fei electrode district, electrode district light transmission rate, show situation, make touch display unit there is better optics display performance.
The present invention also provides a kind of manufacture method of touch control display apparatus, comprising:
Form touch control layer, described touch control layer comprises electrode district and etched area, and described electrode district comprises touch-control electrode and induction electrode arranged in a crossed manner, the formation etched area, space between described touch-control electrode and induction electrode;
Form restraining barrier, described restraining barrier and described touch control layer are oppositely arranged, corresponding position, Yu electrode district, described restraining barrier has the first transmittance, corresponding position, Yu etched area, described restraining barrier has the second transmittance, and the difference of described the first transmittance and the second transmittance is in predetermined threshold range.
The manufacture method of touch control display apparatus of the present invention also comprises the step that forms substrate and miscellaneous part, described touch control layer is arranged on the first side of described substrate, described restraining barrier is arranged on the second side of described substrate, the second place on described restraining barrier has than the projection of the high H of primary importance, and this projection is towards the side away from substrate.Certainly, described touch control layer and restraining barrier can be arranged on the homonymy of substrate, are also provided with one or more in pixel layer, black matrix between described restraining barrier and substrate.
The present invention is provided with the restraining barrier that comprises the first transmittance and the second transmittance in the position relative with touch control layer, the difference of described the first transmittance and the second transmittance is in predetermined threshold range, the first transmittance is corresponding with electrode district, the second transmittance is corresponding with etched area, because electrode district and etched area relative position are provided with the object of different transmittances, thereby reduce the different caused graphic limits of Yu Fei electrode district, electrode district light transmission rate, show situation, make touch display unit there is better optics display performance.
As shown in Figure 7, the mode that adopts exposure completely to add partial etching realizes the structural representation of the electrode district thicknesses of layers different from etched area, usings common electrode layer and describe as example in the restraining barrier of this embodiment.Described public electrode layer material is generally transparent conductive material, as common ITO material.Described common electrode layer is carried out etching processing by photoetching process.Wherein, can design separately a public electrode optical mask plate according to the distribution of electrode district and etched area, adopt exposure completely but the mode of partial etching, realize the electrode district thicknesses of layers different from etched area, take positive photoresist as example, the complete photic zone 7 of the corresponding optical mask plate in electrode district, the light tight district 8 of the corresponding optical mask plate in etched area.
As shown in Figure 8, the mode of employing HTM realizes the structural representation of the electrode district thicknesses of layers different from etched area, if because of technological design, the in the situation that of need to removing public electrode completely in partial display district or its periphery, also can adopt half-tone mask plate HTM(half tone mask) or tone optical mask plate (Gray tone mask) design proposal, by illumination, etching, photoresist ashing, the process implementation of etching is without common electrode area again, Yu Hou common electrode area, thin common electrode area, take positive photoresist as example, the complete photic zone 7 of the corresponding optical mask plate in electrode district, the semi-opaque region 9 of the corresponding optical mask plate in etched area.
As shown in Figure 9, adopt touch-control electrode optical mask plate and reflexive photoresist scheme to realize the structural representation of the electrode district photoresist different with etched area, control electrode pattern adopts positive photoresist 10, public electrode adopts negative photoresist 11, reach the public electrode pattern with electrode district/etched area opposed complementary, certainly, if touch-control XY axial electrode pattern adopts respectively two optical mask plates, corresponding common electrode layer is corresponding adopts two optical mask plates to adopt the mode of double exposure to realize above-mentioned lithographic results; That is: thick common electrode area is corresponding to the etched area of touch control layer, and thin common electrode area is corresponding to the electrode district of touch control layer, thereby realizes the film layer structure difference between zones of different on thickness direction.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a touch control display apparatus, is characterized in that, comprising:
Touch control layer, comprises electrode district and etched area, and described electrode district comprises touch-control electrode and induction electrode arranged in a crossed manner, the formation etched area, space between described touch-control electrode and induction electrode;
Restraining barrier, be oppositely arranged with described touch control layer, corresponding position, Yu electrode district, described restraining barrier has the first transmittance, and corresponding position, Yu etched area, described restraining barrier has the second transmittance, and the difference of described the first transmittance and the second transmittance is in predetermined threshold range.
2. touch control display apparatus according to claim 1, it is characterized in that, described restraining barrier has the first thickness in the first transmittance position, in the second transmittance position, has the second thickness, and described the first thickness and the difference of the second thickness and the thickness of electrode exist corresponding relation.
3. touch control display apparatus according to claim 2, is characterized in that, the material on described restraining barrier is identical with the material of described electrode, and described restraining barrier is identical with the thickness of described electrode with second thickness difference of transmittance position in the first transmittance position.
4. touch control display apparatus according to claim 2, it is characterized in that, the material on described restraining barrier is not identical with the material of described electrode, and described restraining barrier is determined according to the light penetration of electrode district and etched area at the thickness difference of the first transmittance position and the second transmittance position.
5. touch control display apparatus according to claim 1, it is characterized in that, described restraining barrier adopts the first material in the first transmittance position, in the second transmittance position, adopt the second material, the transmittance of described the first material is to determine according to the corresponding transmittance of electrode zone and the transmittance of etched area with the transmittance of the second material.
6. the touch control display apparatus described in any one according to claim 1-5, is characterized in that, also comprise a substrate, described touch control layer and restraining barrier are arranged on homonymy or the heteropleural of described substrate.
7. touch control display apparatus according to claim 6, is characterized in that, described restraining barrier is common electrode layer or conductive film dorsad.
8. touch control display apparatus according to claim 7, is characterized in that, is also provided with one or more in pixel layer, insulation course, black matrix, flatness layer between described restraining barrier and substrate.
9. a manufacture method for touch control display apparatus, is characterized in that, comprising:
Form touch control layer, described touch control layer comprises electrode district and etched area, and described electrode district comprises touch-control electrode and induction electrode arranged in a crossed manner, the formation etched area, space between described touch-control electrode and induction electrode;
Form restraining barrier, described restraining barrier and described touch control layer are oppositely arranged, corresponding position, Yu electrode district, described restraining barrier has the first transmittance, corresponding position, Yu etched area, described restraining barrier has the second transmittance, and the difference of described the first transmittance and the second transmittance is in predetermined threshold range.
10. the manufacture method of touch control display apparatus according to claim 9, it is characterized in that, described restraining barrier has the first thickness in the first transmittance position, in the second transmittance position, having the second thickness, there is corresponding relation in described the first thickness and the difference of the second thickness and the thickness of electrode.
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| CN201310656070.8A CN103677411A (en) | 2013-12-06 | 2013-12-06 | Touch display device and manufacture method thereof |
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| CN106371684A (en) * | 2016-09-20 | 2017-02-01 | 京东方科技集团股份有限公司 | Touch display device, touch display panel and manufacturing method thereof |
| CN106527826A (en) * | 2017-01-09 | 2017-03-22 | 京东方科技集团股份有限公司 | Touch screen and manufacturing method therefor, and display device |
| CN106802738A (en) * | 2016-12-23 | 2017-06-06 | 上海天马有机发光显示技术有限公司 | A kind of contact panel and display device |
| CN109087586A (en) * | 2018-07-18 | 2018-12-25 | 昆山国显光电有限公司 | Display device and its flexible display panels |
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