WO2018028199A1 - 触控基板和触控显示装置 - Google Patents
触控基板和触控显示装置 Download PDFInfo
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- WO2018028199A1 WO2018028199A1 PCT/CN2017/076918 CN2017076918W WO2018028199A1 WO 2018028199 A1 WO2018028199 A1 WO 2018028199A1 CN 2017076918 W CN2017076918 W CN 2017076918W WO 2018028199 A1 WO2018028199 A1 WO 2018028199A1
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- light
- touch
- substrate
- disposed
- flexible substrate
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- 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
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
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- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
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- H01L25/16—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits
- H01L25/167—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits comprising optoelectronic devices, e.g. LED, photodiodes
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- H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
Definitions
- Embodiments of the present invention relate to a touch substrate and a touch display device.
- touch technology has been widely used in electronic devices such as mobile phones and tablet computers.
- Touch technology provides an efficient and convenient way of human-computer interaction.
- the basic principle is to capture the touch and motion information of a touch object (such as a human finger or a stylus), and convert the acquired touch and motion information into The electrical signal is judged and identified to realize the control function.
- the touch screen includes a plurality of types such as a resistive type, a capacitive type, and a light sensing type.
- the light-sensitive touch screen determines the position of the touch operation by setting a photodetector to sense a change in light caused by a touch operation.
- Embodiments of the present invention provide a touch substrate and a touch display device.
- At least one embodiment of the present invention provides a touch substrate including: a light source; a light transmission plate disposed on a light exiting side of the light source; and a flexible substrate including a flexible substrate and disposed on the flexible substrate Facing a plurality of contacts of the light transmission plate, wherein the flexible substrate is disposed opposite to the light transmission plate to form a transparent spacer layer therebetween, the transparent spacer layer having a refractive index smaller than the light a refractive index of the transmission plate, and a distance of the flexible substrate to the light transmission plate is greater than a height of the contact portion; and a light detecting device configured to detect the emitted light emitted from the light transmission plate.
- the light detecting device is disposed on a side of the contact portion remote from the light transmission plate.
- the light detecting device includes a plurality of sub-detecting devices respectively disposed between the plurality of contact portions and the flexible substrate.
- the plurality of sub-detection devices are photodiodes or phototransistors.
- the light detecting device is disposed on a side of the flexible substrate that is away from the contact portion.
- the plurality of contacts are disposed obliquely with respect to the flexible substrate.
- the light detecting device is a camera.
- the light detecting device is disposed on a side of the light transmission plate that is away from the contact portion.
- the light detecting device is a camera or a photodiode array or a phototransistor array.
- the touch substrate further includes a reflective layer disposed between the plurality of contacts and the flexible substrate.
- the reflective layer includes a plurality of reflective portions, and the plurality of reflective portions respectively correspond to the plurality of contact portions.
- the touch substrate further includes a support portion between the light transmission plate and the flexible substrate to bond the light transmission plate and the flexible substrate to each other.
- the touch substrate further includes a spacer disposed on an inner side of the support portion and located between the flexible substrate and the light transmission plate, the height of the spacer Equal to the distance of the flexible substrate to the light transmitting plate.
- the spacer is opaque.
- the plurality of contacts are transparent.
- the side surface of the contact portion is provided with a reflecting surface.
- At least one embodiment of the present invention provides a touch display device comprising the touch substrate of any of the above.
- the touch display device further includes a display panel, the touch substrate is disposed on a light exiting side of the display panel, and the light transmission plate is disposed between the flexible substrate and the display panel.
- the touch display device further includes an array substrate, the touch substrate is disposed opposite to the array substrate, and the light transmission plate is disposed between the flexible substrate and the array substrate.
- the touch display device further includes a backlight and a light guide structure, and the light guide structure is configured to introduce light emitted from a side of the light transmission plate of the touch substrate into the backlight.
- the embodiment of the invention adopts the light-sensing touch technology, and can realize the large-size touch application relatively easily compared with the resistive or capacitive touch technology; on the other hand, the embodiment of the invention can also be applied to the flexible display. In the device.
- FIG. 1 is a cross-sectional view of a touch substrate according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of a touch substrate in a touch state according to an embodiment of the present invention
- 3a is a cross-sectional view of a touch substrate including a plurality of sub-detecting devices according to an embodiment of the present invention
- FIG. 3b is a cross-sectional view of the touch substrate shown in FIG. 3a in a touch state
- FIG. 4a is a cross-sectional view of a touch substrate including a reflective layer according to an embodiment of the present invention
- FIG. 4b is a cross-sectional view of the touch substrate shown in FIG. 4a in a touch state
- FIG. 5 is a schematic top plan view of a touch substrate according to an embodiment of the present invention.
- FIG. 6 is a cross-sectional view of a touch substrate including a spacer according to an embodiment of the present invention.
- FIG. 7 is a cross-sectional view of a cover-surface touch display device according to an embodiment of the invention.
- FIG. 7 is a cross-sectional view of an in-cell touch display device according to an embodiment of the invention.
- FIG. 8 is a schematic diagram of a touch display device including a backlight and a light guide structure according to an embodiment of the present invention.
- the embodiment of the invention provides a touch substrate and a touch display device, which can change the total light reflection state at the interface of the light transmission plate by contacting the contact portion with the light transmission plate during the touch process to make the light emitted from the light transmission plate A change occurs, and then the touch position can be determined by detecting the light. Since the light sensing touch technology is adopted in the embodiment of the present invention, a large-sized touch application can be realized relatively easily compared with the resistive or capacitive touch technology; on the other hand, since the contact portion is disposed on the flexible substrate Thus, embodiments of the present invention can also be applied to a flexible display device.
- the touch substrate includes: a light source 70; a light transmission plate 10 disposed on a light exiting side of the light source 70; and a support portion 30 (eg, a frame) a glue or similar support) disposed on the light transmission plate 10; a flexible substrate 24 disposed on a side of the support portion 30 remote from the light transmission plate 10, and including a flexible substrate 20 and disposed on the flexible substrate 20 And a plurality of contact portions 40 facing the optical transmission board 10; and a light detecting device 80 configured to detect the outgoing light emitted from the optical transmission board 10.
- the flexible substrate 20 is disposed opposite to the light transmission plate 10 to form a transparent spacer layer 31 therebetween.
- the refractive index of the transparent spacer layer 31 is smaller than the refractive index of the light transmission plate 10 at the light source 70.
- the angle between the emitted light 6 entering the light transmitting plate 10 and the upper surface 10a of the light transmitting plate 10 is greater than or equal to the critical angle of total reflection, the light 6 is totally reflected at the upper surface 10a.
- air or other fluid e.g., gas or liquid
- the distance from the flexible substrate 20 to the light transmission plate 10 is greater than the height of the contact portion 40, so that the contact portion 40 and the light transmission plate 10 are spaced apart from each other in the case where the flexible substrate 20 is not touched.
- the flexible substrate 20 can be made of polyethylene, polycarbonate, PET (polyethylene terephthalate) or the like, in the case where the flexible substrate 20 is touched.
- the contact portion 40 may be in contact with the light transmission plate 10 to change the state of total reflection of the light 6 at the upper surface 10a of the light transmission plate 10.
- the lower side of the light transmission plate 10 may be air or provided with a film having a refractive index smaller than that of the light transmission plate 10 such that the light 6 is at the lower surface 10b of the light transmission plate 10. Total reflection occurs; or, the lower surface 10b of the light transmission plate 10 may be provided with a reflective surface (for example, coating a reflective material at the lower surface 10b or providing a reflective layer to form the reflective surface) so that The light 6 is specularly reflected at the lower surface 10b.
- Light rays 6 can be transmitted in the light transmission plate 10 by causing the light 6 to be totally reflected on the upper surface 10a of the light transmission plate 10 and totally or specularly reflected on the lower surface 10b.
- the light detecting device 80 may be disposed on a side of the contact portion 40 remote from the light transmitting plate 10, in which case the light detecting device 80 may detect the outgoing light emitted from the upper surface 10a of the light transmitting plate 10 to The touch position is determined; alternatively, the light detecting device 80 may be disposed on a side of the light transmitting plate 10 remote from the contact portion 40, in which case the light detecting device 80 may emit the light from the lower surface 10b of the light transmitting plate 10. The light is detected to determine the touch position; alternatively, the light detecting device 80 may be disposed at the side end of the light transmitting plate 10 (as shown at the right end of the light transmitting plate 10 shown in FIG. 1), in which case the light detecting device 80 may The emitted light emitted from the side surface 10c of the light transmission plate 10 is detected to determine the touch position.
- the light detecting device 80 may be disposed on a side of the flexible substrate 20 that is away from the contact portion 40.
- the flexible substrate 20 is touched (for example, touched by the stylus pen 90)
- the flexible substrate 20 is bent such that the contact portion 40 at the touched position contacts the light transmitting plate 10 to break the upper side of the light transmitting plate 10.
- the total reflection condition of the surface 10a at the touch position so that a part of the light 6 originally propagating in the light transmission plate 10 is emitted from the touch position to the contact portion 40 to form the outgoing light 7, and the emitted light 7 enters the contact portion 40.
- the light is emitted from the flexible substrate 20, and then the light detecting device 80 can determine the touch position by detecting the position of the light leakage (i.e., the exit position of the outgoing light 7).
- the light detecting device 80 may be a camera that can photograph the flexible substrate 20 such that the touch position can be determined based on the spot position in the captured image.
- the light detecting device 80 may be disposed at a frame of the touch substrate to avoid blocking the screen of the touch substrate.
- the contact portion 40 may be disposed obliquely with respect to the flexible substrate 20. Since the outgoing light 7 is emitted along the extending direction of the contact portion 40, by tilting the contact portion 40 with respect to the flexible substrate 20, it is advantageous to prevent the emitted light 7 from being blocked by the stylus pen 90, resulting in a decrease in the touch effect.
- the light detecting device 80 is disposed on a flexible substrate In the case of 20 away from the side of the contact portion 40, as shown in FIG. 3a, the light detecting device 80 may include a plurality of sub-detecting devices 81 corresponding to the plurality of contact portions 40 respectively (as shown in FIG. 3a). Each sub-detecting device 81 corresponds to one contact portion 40), and the plurality of sub-detecting devices 81 are disposed between the contact portion 40 and the flexible substrate 20. In this embodiment, since the sub-detecting device 81 is disposed between the contact portion 40 and the flexible substrate 20, it is not blocked by the touch object during the touch operation, and thus the touch effect is better.
- the contact portion 40 at the touched position contacts the light transmitting plate 10, so that the light transmitting plate 10 is The emitted light 7 is emitted at the touch position, and the emitted light 7 enters the contact portion 40 and is detected by the corresponding sub-detecting device 81, and then the touch position can be determined based on the position of the sub-detecting device 81.
- the sub-detection device 81 can be a photodiode or a phototransistor (eg, a phototransistor).
- the touch substrate provided by at least one embodiment of the present invention may further include a reflective layer 60.
- the reflective layer 60 is disposed between the contact portion 40 and the flexible substrate 20.
- the contact portion 40 at the touched position contacts the light transmitting plate 10, so that the light transmitting plate 10 emits the outgoing light 7 at the touched position, which is The incident light 7 enters the contact portion 40 and is reflected by the reflective layer 60 and enters the optical transmission plate 10 again. Thereafter, the outgoing light 8 is emitted from the lower surface of the optical transmission plate 10, and the emitted light 8 is detected by the light detecting device 80, so that the touch can be determined. position.
- the reflective layer 60 may include a plurality of reflective portions 61 spaced apart from each other, the plurality of reflective portions 61 respectively corresponding to the plurality of contact portions 40 (as shown in FIGS. 4a and 4b, each reflective portion 61 corresponds to one contact portion 40 ).
- the touch substrate provided in the embodiment of the present invention is disposed on the light-emitting side of the display panel to form the touch display device, the reflective layer 60 can be effectively prevented from affecting the display effect.
- the light detecting device 80 can be a camera or a photodiode array or an array of phototransistors (eg, phototransistor transistors).
- the light detecting device 80 is a camera
- the lower side of the light transmitting plate 10 is photographed by the light detecting device 80, and according to the spot position in the captured image.
- the touch position can be determined; in the case where the photodetecting device is a photodiode array or a phototransistor array, the touch position can be determined according to the position of the photodiode or phototransistor at the touch position.
- multi-touch can be realized by detecting the outgoing light emitted from the upper surface or the lower surface of the light transmission plate 10 to determine the touch position.
- the contact portion 40 may be transparent, so that the outgoing light 7 obtained by the light 6 emerging from the upper surface of the light transmission plate 10 may enter the contact portion 40, In order to detect the emitted light 7 by the light detecting means 80 (see Figs. 2 and 3b) or to detect the reflected light of the outgoing light 7 (see Fig. 4b).
- the side surface 41 (see FIG. 1) of the contact portion 40 may be provided with a reflective surface, for example by coating a reflective material on the side surface 41 of the contact portion 40 or providing a reflective layer to form the reflective surface. .
- a reflective surface for example by coating a reflective material on the side surface 41 of the contact portion 40 or providing a reflective layer to form the reflective surface.
- the light transmission plate 10 has a grid-like structure including a plurality of lateral extensions and a plurality of longitudinal extensions, each lateral extension and one side of each longitudinal extension The ends are provided with a light source 70 and the other side is provided with a light detecting device 80.
- a touch occurs, referring to the touch position A in FIG. 5, since light rays in the light transmission plate 10 are emitted from the touch position A, the lateral extensions corresponding to the touch position A and the side ends of the longitudinal extension are emitted. The intensity of the emitted light is weakened.
- the ordinate of the touch position A can be obtained according to the light detecting device 80 corresponding to the lateral extending portion, and the abscissa of the touch position A can be obtained according to the light detecting device 80 corresponding to the longitudinal extending portion. Thereby, the coordinates of the touch position A are obtained.
- the contact portion 40 may be transparent or opaque as long as the light emitted from the side end of the light transmission plate 10 detected by the light detecting device 80 is emitted.
- the intensity of the change can be.
- the touch substrate provided by at least one embodiment of the present invention may further include a spacer 50 disposed on the inner side of the support portion 30 and located on the flexible substrate 20 and the light transmission plate 10 .
- the height of the spacer 50 is equal to the distance of the flexible substrate 20 to the light transmission plate 10.
- the spacer 50 may be opaque, which is prepared, for example, from a black opaque material such as a black resin.
- the light emitted from the upper surface of the light transmission plate 10 can be absorbed by the spacer 50 when it is irradiated onto the spacer 50, so that the touch can be avoided by changing the direction of the emitted light by the spacer 50. Positioning creates interference.
- light source 70 can be an infrared source
- light detecting device 80 can be an infrared detector.
- an infrared light source and an infrared ray detector can be used to avoid other light sources in the display device (for example, a backlight in a liquid crystal display device or an active light emitting display device).
- the light emitted by the light-emitting element is received by the light detecting device 80 to cause interference.
- the light detecting device may sense the light of the predetermined wavelength.
- At least one embodiment of the present invention further provides a touch display device comprising the touch substrate provided by any of the above embodiments.
- the touch display device can be an On cell touch display device.
- the touch display device further includes a display panel 200.
- the touch substrate is disposed on the light emitting side of the display panel 200, and the optical transmission board 10 is disposed on the flexible substrate 24 and the display panel 200. between.
- the display panel 200 may include an array substrate 210 and a counter substrate 220 that are oppositely disposed, and a connection portion 230 that connects the two substrates.
- the display panel 200 may be a liquid crystal panel.
- a liquid crystal layer is disposed between the array substrate 210 and the counter substrate 220, and the array substrate 210 is provided with pixel electrodes arranged in a matrix.
- the display panel 200 may also be an OLED (Organic Light Emitting Diode) panel, in which case an OLED arranged in an array is disposed on the array substrate 210.
- OLED Organic Light Emitting Diode
- the touch display device provided by at least one embodiment of the present invention may be an incell touch display device.
- the touch display device further includes an array substrate 210.
- the touch substrate is disposed opposite to the array substrate 210 (that is, the touch substrate is used as an opposite substrate of the display panel), and the light is
- the transmission board 10 is disposed between the flexible substrate 24 and the array substrate 210.
- the touch display device may further include a backlight 300 and a light guide structure 400 .
- the light guiding structure 400 is configured to introduce light emitted from a side surface of the light transmitting plate 10 of the touch substrate (see 10c in FIG. 1) into the backlight 300. In this way, the light emitted by the light source of the touch substrate can be fully utilized to improve the integration of the touch display device.
- the touch display device provided by the embodiment of the invention can be any liquid crystal display device, electronic paper, OLED display device, mobile phone, tablet computer, television, display, notebook computer, digital photo frame, navigator, etc., which has touch and display functions. Product or part.
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- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
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Abstract
Description
Claims (20)
- 一种触控基板,包括:光源;光传输板,其设置于所述光源的出光侧;柔性基板,包括柔性衬底以及设置于所述柔性衬底上且面向所述光传输板的多个接触部,其中,所述柔性衬底与所述光传输板相对设置以在二者之间形成透明间隔层,所述透明间隔层的折射率小于所述光传输板的折射率,并且所述柔性衬底到所述光传输板的距离大于所述接触部的高度;以及光检测装置,其配置为检测从所述光传输板射出的出射光。
- 根据权利要求1所述的触控基板,其中,所述光检测装置设置于所述接触部的远离所述光传输板的一侧。
- 根据权利要求2所述的触控基板,其中,所述光检测装置包括多个子检测装置,所述多个子检测装置分别设置于所述多个接触部与所述柔性衬底之间。
- 根据权利要求3所述的触控基板,其中,所述多个子检测装置为光敏二极管或光敏三极管。
- 根据权利要求2所述的触控基板,其中,所述光检测装置设置于所述柔性衬底的远离所述接触部的一侧。
- 根据权利要求5所述的触控基板,其中,所述多个接触部相对于所述柔性衬底倾斜设置。
- 根据权利要求5所述的触控基板,其中,所述光检测装置为摄像头。
- 根据权利要求1所述的触控基板,其中,所述光检测装置设置于所述光传输板的远离所述接触部的一侧。
- 根据权利要求8所述的触控基板,其中,所述光检测装置为摄像头或者光敏二极管阵列或者光敏三极管阵列。
- 根据权利要求8所述的触控基板,还包括反射层,其中,所述反射层设置于所述多个接触部与所述柔性衬底之间。
- 根据权利要求10所述的触控基板,其中,所述反射层包括多个反射部,所述多个反射部分别对应所述多个接触部。
- 根据权利要求1至11中任一项所述的触控基板,还包括支撑部,位于所述光传输板和所述柔性基板之间以使所述光传输板和所述柔性基板彼此接合。
- 根据权利要求12所述的触控基板,还包括隔垫物,其中,所述隔垫物设置于所述支撑部的内侧并且位于所述柔性衬底与所述光传输板之间,所述隔垫物的高度等于所述柔性衬底到所述光传输板的距离。
- 根据权利要求13所述的触控基板,其中,所述隔垫物不透光。
- 根据权利要求1至11中任一项所述的触控基板,其中,所述多个接触部是透明的。
- 根据权利要求15所述的触控基板,其中,所述接触部的侧面设置有反射面。
- 一种触控显示装置,包括权利要求1至16中任一项所述的触控基板。
- 根据权利要求17所述的触控显示装置,还包括显示面板,其中,所述触控基板设置于所述显示面板的出光侧,并且所述光传输板设置于所述柔性基板与所述显示面板之间。
- 根据权利要求17所述的触控显示装置,还包括阵列基板,其中,所述触控基板与所述阵列基板相对设置,并且所述光传输板设置于所述柔性基板与所述阵列基板之间。
- 根据权利要求17至19中任一项所述的触控显示装置,还包括背光源和光导结构,其中,所述光导结构配置为将从所述触控基板的光传输板的侧面射出的光导入所述背光源中。
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CN103455211A (zh) * | 2012-06-01 | 2013-12-18 | 元太科技工业股份有限公司 | 光学式触控显示面板 |
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CN103455211A (zh) * | 2012-06-01 | 2013-12-18 | 元太科技工业股份有限公司 | 光学式触控显示面板 |
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