CN113655913A - Touch display device and terminal equipment - Google Patents

Touch display device and terminal equipment Download PDF

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Publication number
CN113655913A
CN113655913A CN202111012898.0A CN202111012898A CN113655913A CN 113655913 A CN113655913 A CN 113655913A CN 202111012898 A CN202111012898 A CN 202111012898A CN 113655913 A CN113655913 A CN 113655913A
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CN
China
Prior art keywords
infrared
frame
strip
limiting
display device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111012898.0A
Other languages
Chinese (zh)
Inventor
王子锋
张阳阳
贾宁
郭思佳
揭育顺
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Publication date
Application filed by BOE Technology Group Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to CN202111012898.0A priority Critical patent/CN113655913A/en
Publication of CN113655913A publication Critical patent/CN113655913A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements

Abstract

The disclosure relates to a touch display device and a terminal device, and relates to the technical field of touch. The touch display device comprises a display panel, a frame, an infrared sensing device and an infrared filter strip, wherein the display panel is provided with a first surface and a second surface which are opposite to each other, and comprises a display area and a peripheral area; the frame is provided with a plurality of frame strips comprising a main body part, a first limiting part and a second limiting part, and the first limiting part and the second limiting part are connected to the surface of the main body part close to the display panel; the first limiting part is positioned on one side of the first surface, which is far away from the second surface; the second limiting part is positioned on one side of the first limiting part close to the second surface; the frame strips comprise a first frame strip and a second frame strip which are arranged oppositely; the infrared induction device is arranged in the limiting groove of the frame strip and comprises an infrared induction unit, and at least part of the infrared induction unit is positioned between the first surface and the first limiting part; at least partial area of the infrared filter strip is limited between the first limiting part and the first surface of at least one frame strip, and the infrared filter strip is in direct contact with the first surface.

Description

Touch display device and terminal equipment
Technical Field
The disclosure relates to the technical field of touch control, in particular to a touch control display device and terminal equipment.
Background
Currently, display devices with touch functions are widely applied to various electronic devices, and a user can perform touch operation through a finger or a touch pen, so as to control a picture displayed by the display device and realize human-computer interaction. However, in a large-sized display device such as an electronic whiteboard, the capacitive touch system has a complicated structure, blocks light, reduces brightness, is easily affected by factors such as static electricity, a magnetic field, and an unstable voltage, and has low reliability.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
An object of the present disclosure is to overcome the above-mentioned deficiencies in the prior art, and to provide a touch display device and a terminal device, which can implement a touch function by infrared rays and improve brightness and reliability.
According to an aspect of the present disclosure, there is provided a touch display device including:
the display panel is provided with a first surface and a second surface which are opposite, and the display panel comprises a display area and a peripheral area outside the display area; the first surface is positioned in the area of the display area and used for emitting light rays;
the frame is surrounded by a plurality of frame strips which surround the display panel; the frame strip comprises a main body part, a first limiting part and a second limiting part, wherein the first limiting part and the second limiting part are connected to the surface, close to the display panel, of the main body part; the first limiting part is positioned on one side of the first surface, which is far away from the second surface, and extends into the peripheral area; the second limiting part is positioned on one side of the first limiting part close to the second surface, and a limiting groove is formed between the second limiting part and the first limiting part; the frame strips comprise a first frame strip and a second frame strip which are arranged oppositely;
the infrared induction device is arranged in the limiting groove of the frame strip and comprises an infrared induction unit, and at least part of the infrared induction unit is positioned between the first surface and the first limiting part; one of the infrared induction units in the limiting groove of the first frame strip and the infrared induction units in the limiting groove of the second frame strip is used for emitting infrared rays, and the other one is used for receiving the infrared rays;
the infrared light filtering strip, at least one the frame strip first spacing portion with it has been injectd between the first face at least partial region of infrared light filtering strip, infrared light filtering strip is located infrared induction system is close to display panel's one side, just infrared light filtering strip with first face direct contact.
In an exemplary embodiment of the present disclosure, the first position-limiting portion is provided with a first slot; the infrared filter strip includes:
the body is limited between the first limiting part and the first surface;
the first inserting portion is arranged on the surface, close to the first limiting portion, of the body, and the first inserting portion is inserted into the first slot.
In an exemplary embodiment of the disclosure, a side wall of the first slot is contracted away from the first surface, and a shape of the first insertion part is matched with a shape of the slot.
In an exemplary embodiment of the present disclosure, the display panel includes:
a display substrate;
the protective cover plate is arranged on one side of the display substrate; the surface of the protective cover plate, which is far away from the display substrate, is the first surface, and the surface of the display substrate, which is far away from the protective cover plate, is the second surface; the protective cover plate is provided with a second slot, and the second slot is positioned in the peripheral area;
the infrared filter strip further comprises:
the second inserting portion is arranged on the surface, close to the first face, of the body, and the second inserting portion is inserted into the second slot.
In an exemplary embodiment of the present disclosure, an orthographic projection of the infrared filter bar on the display panel is located within the peripheral area.
In an exemplary embodiment of the present disclosure, a surface of the body proximate to the first face includes a first region and a second region; the second inserting part is arranged in the first area; the infrared filter strip further comprises:
and the buffer layer is arranged in the second area and is in direct contact with the first surface.
In an exemplary embodiment of the present disclosure, the material of the buffer layer includes foam cotton.
In an exemplary embodiment of the present disclosure, the infrared sensing apparatus further includes:
the driving plate is arranged in the limiting groove and is detachably connected with the first limiting part and the second limiting part; the infrared induction part is arranged on a partial area of the surface of the driving board far away from the display panel.
In an exemplary embodiment of the present disclosure, the infrared filter bar further includes:
the mounting part is attached to and connected with the driving plate;
and the connecting part is used for connecting the body and the mounting part.
In an exemplary embodiment of the present disclosure, the mounting part and the driving plate are connected by a screw penetrating the mounting part and the driving plate.
In an exemplary embodiment of the present disclosure, the second position-limiting portion is provided with a second slot; the infrared filter strip further comprises:
the mounting part is provided with a second inserting part which is inserted into the second slot;
and the connecting part is used for connecting the body and the mounting part.
In an exemplary embodiment of the present disclosure, at least a partial region of the connection portion is located on a side of the first surface close to the second surface, and abuts against the display panel.
In an exemplary embodiment of the present disclosure, the display panel includes a backlight module and a display substrate, the display substrate includes an array substrate, and a liquid crystal layer and a color film layer located on a side of the array substrate away from the backlight module;
the touch display device further includes:
the frame and the backlight module are arranged on the back plate, an inner frame is arranged on one side, close to the backlight module, of the back plate, and the display panel is limited in the inner frame.
In an exemplary embodiment of the present disclosure, a supporting rib is disposed on an inner wall of the inner frame, the backlight module is disposed between the supporting rib and the back plate, and the display substrate is disposed on the supporting rib.
In an exemplary embodiment of the present disclosure, the back plate is provided with a boss located outside the inner frame, the frame is provided with a clamping hole, and the boss is clamped in the clamping hole.
According to an aspect of the present disclosure, a terminal device is provided, which includes the touch display device described in any one of the above.
The touch display device and the terminal device are characterized in that an infrared sensing device capable of emitting infrared rays and an infrared sensing device capable of receiving infrared rays are respectively arranged in two opposite frame strips in a frame, and infrared sensing units of the infrared sensing device and the infrared sensing device are located on one side, far away from a second surface, of a first surface. When the touch control operation is not performed, one of the two opposite infrared sensing devices emits infrared rays, and the other infrared sensing device receives infrared rays, and when the touch control operation is performed, the infrared rays blocked by an obstacle such as a finger or a touch control pen can determine the touch control position according to the position of the infrared sensing device, so that the touch control operation can be realized. Because the infrared ray is adopted for induction, the influence of external factors such as a magnetic field, static electricity and the like can be avoided, the reliability of touch control is improved, and a touch control electrode in a capacitance type touch control structure is not required to be arranged, so that light rays emitted by the first surface are prevented from being shielded.
Meanwhile, at least part of the infrared sensing unit is located between the first surface and the first limiting part, so that infrared rays can pass through the infrared filter strip, stray light in the infrared rays emitted or received by the infrared sensing device can be filtered through the infrared filter strip, and the touch accuracy is prevented from being influenced.
In addition, the edge of the display panel can be protected through the frame, the infrared induction device and the infrared filter strip can be limited by the space in the frame, and the space is saved. The infrared induction device is limited by the limiting groove formed by the first limiting portion and the second limiting portion, the area extending into the peripheral area by the first limiting portion and at least partial area of the infrared light filtering strip by the first surface are limited, other structures for limiting the infrared light filtering strip are arranged between the infrared light filtering strip and the first surface, the phenomenon that the distance between the infrared light filtering strip and the first surface is too large is avoided, the distance between the infrared induction unit and the first surface is correspondingly increased, the transmitted and received infrared rays can be close to the first surface as far as possible, and touch operation is prevented from being triggered when the distance from the touch display device is far away.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 is a schematic view of a touch display device according to an embodiment of the disclosure.
Fig. 2 is a schematic view of a frame strip in the embodiment of fig. 1.
Fig. 3 is a schematic view of another embodiment of the touch display device of the present disclosure.
Fig. 4 is a schematic view of another embodiment of a touch display device according to the present disclosure.
FIG. 5 is a schematic view of the frame strip in the embodiment of FIG. 4
Description of reference numerals:
1. a display panel; 11. a backlight module; 12. a display substrate; 13. an adhesive layer; 14. a protective cover plate; 101. a first side; 102. a second face;
2. a frame; 21. frame strips; 211. a main body portion; 212. a first limiting part; 2121. a first slot; 2122. a first groove; 213. a second limiting part; 2131. a second slot; 2132. a second groove; 22. a clamping hole; 100. a limiting groove;
3. an infrared sensing device; 31. a drive plate; 32. an infrared sensing unit;
4. an infrared filter strip; 41. a body; 411. a first insertion part; 42. an installation part; 421. a second insertion part; 43. a connecting portion;
5. a back plate; 51. a boss;
6. an inner frame; 61. a support edge;
7. a buffer layer.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.
Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.
The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," and "third," etc. are used merely as labels, and are not limiting on the number of their objects.
The present disclosure provides a touch display device, as shown in fig. 1 to 5, the touch display device may include a display panel 1, a frame 2, an infrared sensing device 3, and an infrared filter strip 4, wherein:
a display panel 1 having a first side 101 and a second side 102 opposite to each other; the display panel 1 includes a display area and a peripheral area outside the display area; the first surface 101 is positioned in the area of the display area and used for emitting light rays;
the frame 2 is formed by a plurality of frame strips 21 surrounding the display panel 1; the frame strip 21 includes a main body 211, a first position-limiting portion 212 and a second position-limiting portion 213, wherein the first position-limiting portion 212 and the second position-limiting portion 213 are connected to the surface of the main body 211 close to the display panel 1; the first position-limiting part 212 is located on one side of the first surface 101, which is far away from the second surface 102, and extends into the peripheral region; the second position-limiting portion 213 is located on one side of the first position-limiting portion 212 close to the second surface 102, and a position-limiting groove 100 is formed between the second position-limiting portion and the first position-limiting portion 212; the frame strip 21 comprises a first frame strip and a second frame strip which are arranged oppositely;
the infrared induction device 3 is disposed in the limiting groove 100 of the frame strip 21 and includes an infrared induction unit 32, and at least a portion of the infrared induction unit 32 is located between the first surface 101 and the first limiting portion 212; one of the infrared sensing unit 32 in the limiting groove 100 of the first frame strip and the infrared sensing unit 32 in the limiting groove 100 of the second frame strip is used for emitting infrared rays, and the other is used for receiving infrared rays;
an infrared filter strip 4 is defined between the first limiting portion 212 of the at least one frame strip 21 and the first surface 101, the infrared filter strip 4 is located on one side of the infrared sensing device 3 close to the display panel 1, and the infrared filter strip 4 is in direct contact with the first surface 101.
In the touch display device of the present disclosure, the two opposite frame strips 21 in the frame 2 are respectively provided with the infrared sensing device 3 capable of emitting infrared rays and the infrared sensing device 3 capable of receiving infrared rays, and the infrared sensing units 32 of the two are both located on one side of the first surface 101 away from the second surface 102. When the touch control operation is not performed, one of the two opposite infrared sensing devices 3 emits infrared rays, and the other infrared sensing device receives infrared rays, and when the touch control operation is performed, the infrared rays blocked by an obstacle such as a finger or a touch pen can determine the touch control position according to the position of the infrared sensing device 3, so that the touch control operation can be realized. Because infrared rays are adopted for induction, the influence of external factors such as a magnetic field, static electricity and the like can be avoided, the touch reliability is improved, and a touch electrode in a capacitance type touch structure is not needed to be arranged, so that light rays emitted by the first surface 101 are prevented from being shielded.
Meanwhile, at least part of the infrared sensing unit 32 is located between the first surface 101 and the first limiting portion 212, so that the infrared rays can pass through the infrared filter strip 4, stray light in the infrared rays emitted or received by the infrared sensing device 3 can be filtered through the infrared filter strip 4, and the touch accuracy is prevented from being affected.
In addition, can protect display panel 1's edge through frame 2 to the space in usable frame 2 is spacing to infrared induction system 3 and infrared filter strip 4, practices thrift the space. The infrared sensing device 3 can be limited by the limiting groove 100 formed by the first limiting portion 212 and the second limiting portion 213, and at least part of the area of the light filtering strip can be limited by the area extending to the peripheral area by the first limiting portion 212 and the first surface 101, so that the infrared light filtering strip 4 is prevented from being lifted due to the arrangement of other structures for limiting the infrared light filtering strip 4 between the infrared light filtering strip 4 and the first surface 101, the phenomenon that the distance between the light filtering strip and the first surface 101 is too large, the distance between the infrared sensing unit 32 and the first surface 101 is correspondingly increased, the emitted and received infrared rays can be close to the first surface 101 as much as possible, and the touch operation can be prevented from being triggered when the distance from the touch display device is far away.
The following describes each part of the touch display device of the present disclosure in detail:
as shown in fig. 1, 3 and 4, the display panel 1 has a first side 101 and a second side 102 opposite to each other. The display panel 1 may be a liquid crystal display panel (LCD), an Organic Light Emitting Diode (OLED) display panel 1, or a Micro light emitting diode (Micro LED) display panel 1, and the like, and the type thereof is not particularly limited as long as an image can be displayed. Meanwhile, the display panel 1 may be divided into at least a display region and a peripheral region, the peripheral region being located outside the display region, for example, the peripheral region being disposed around the display region. The display area may be used to emit light to display an image, and the area of the first side 101 located in the display area may be the first side 101, so that light may be emitted from a portion of the first side 101 to facilitate viewing of the image by a user.
As shown in fig. 3 and 4, in some embodiments of the present disclosure, the display panel 1 is a liquid crystal display panel, which may include a backlight module 11 and a display substrate 12, wherein:
the backlight module 11 can be used as a light source for the display panel 1, and can be of a side-in type structure or a direct-type structure, which is not limited herein as long as it can emit light to the display substrate 12. The portion of the display substrate 12 located in the display area can be used for modulating and demodulating the light emitted from the backlight module 11 so as to display an image. The display substrate 12 may include an array substrate and a color film substrate which are arranged in a box-to-box manner, the array substrate is located between the color film substrate and the backlight module 11, a liquid crystal layer located in a display area is arranged between the array substrate and the color film substrate, and a pixel electrode and a common electrode may be further arranged between the array substrate and the color film substrate. Meanwhile, the backlight module 11 may have a polarizer, and one side of the color film substrate away from the backlight module 11 may be provided with a polarizer. The deflection state of the liquid crystal can be adjusted through the pixel electrode and the common electrode, and the light emitted from the first surface 101 can be adjusted by matching with the selection of the polarizer on the polarization direction of the light, so that image display is realized.
In addition, the display panel 1 may further include a transparent cover plate, which may cover a side of the color film substrate away from the backlight module 11, for protection, and the transparent cover plate may be made of a transparent material such as glass and acrylic. The first side 101 of the display panel 1 may be a surface of the transparent cover plate away from the backlight module 11. Of course, the display panel 1 may also include other structures, which are not described in detail herein.
In other embodiments of the present disclosure, the display panel 1 is an organic light emitting diode display panel, which may include a display substrate, the display substrate may include a driving backplane and a plurality of light emitting devices disposed on one side of the driving backplane, the light emitting devices are organic light emitting diodes, and each light emitting device may be driven by the driving backplane to independently emit light, so as to implement image display. Meanwhile, the display panel 1 may further include an encapsulation layer and a transparent cover plate, where the encapsulation layer covers each light emitting device and is used to block water and oxygen from corroding the light emitting device. The transparent cover plate is arranged on one side of the packaging layer far away from the driving back plate, and the transparent cover plate can be made of transparent materials such as glass. The first side 101 of the display panel 1 may be a surface of the transparent cover plate away from the backlight module 11.
Further, as shown in fig. 1, in some embodiments of the present disclosure, the display panel 1 may further include a transparent protective cover 14, which may be disposed on one side of the display substrate 12 and may be bonded to the display substrate 12 through an adhesive layer 13, where the adhesive layer 13 may be a frame sealing adhesive, which may be in a ring structure, and the adhesive layer 13 is located in the peripheral region.
For example, for the liquid crystal display panel, it can be disposed on a side of the transparent cover plate away from the backlight module 11, in which case, the first surface 101 is a surface of the protective cover plate 14 away from the backlight module 11. For the oled display panel, the protective cover 14 may be disposed on a side of the transparent cover away from the driving backplane, and in this case, the first surface 101 is a surface of the protective cover 14 away from the driving backplane.
The frame 2 may surround the display panel 1, and the frame 2 may be surrounded by a plurality of frame bars 21, and each frame bar 21 corresponds to one side of the display panel 1. Each frame strip 21 of the frame 2 at least includes a first frame strip and a second frame strip which are oppositely arranged. For example, the frame 2 has a rectangular structure and may have two first frame strips and two second frame strips, wherein one first frame strip and one second frame strip extend along the length direction and are distributed along the width direction, and the other first frame strip and the other second frame strip extend along the width direction and are distributed along the length direction. That is to say, the lengths of different first frame strips may be different, and the lengths of different second frame strips may also be different. Meanwhile, the display panel 1 may be rectangular, and the four frame strips 21 may respectively correspond to one side of the display panel 1. Of course, the frame strip 21 may have other polygonal structures depending on the shape of the display panel 1.
As shown in fig. 1 to 5, the arbitrary frame strip 21 may include a main body portion 211, a first position-limiting portion 212 and a second position-limiting portion 213, wherein:
the main body 211 may be a linear extending strip structure, which is the main body 211 of the frame strip 21, and the length of the main body 211 is the length of the frame strip 21 and is not less than the length of the side of the display panel 1 corresponding to the frame strip 21. The thickness of the body portion 211, i.e., the distance of the boundary of the body portion 211 in the direction perpendicular to the first face 101, may be greater than the thickness of the display panel 1.
The first position-limiting portion 212 and the second position-limiting portion 213 may be connected to the surface of the main body portion 211 close to the display panel 1, and both of them are strip-shaped structures extending along the extending direction of the main body portion 211. The first position-limiting portion 212 is located on a side of the first surface 101 away from the second surface 102, and extends to the inside of the peripheral region, that is, an orthographic projection of the first position-limiting portion 212 on a plane where the first surface 101 is located extends to be partially overlapped with the first surface 101, and an overlapped region is located in the peripheral region. That is, the first position-limiting portion 212 may block a partial region of the edge of the first surface 101.
The second position-limiting portion 213 is located on a side of the first position-limiting portion 212 close to the second surface 102, and forms a position-limiting groove 100 with the first position-limiting portion 212. Meanwhile, the second position-limiting portion 213 may be located between the first surface 101 and the second surface 102, and a gap may be formed between the second position-limiting portion 213 and the side of the display panel 1.
The first and second position-limiting portions 212 and 213 may be integrally formed with the main body 211, and thus may be formed at one time, or of course, the first and second position-limiting portions 212 and 213 may be separately formed from the main body 211 and fixedly connected thereto. In addition, in some embodiments of the present disclosure, at least one cavity may be disposed in the main body portion 211 and the second position-limiting portion 213, so as to reduce the weight of the frame strip 21.
The infrared sensing device 3 may be disposed in the limiting groove 100 of the frame strip 21, and may include a driving board 31 and an infrared sensing unit 32, wherein the driving board 31 may be provided with a control circuit, and the infrared sensing unit 32 is disposed on the driving board 31 and may emit infrared rays or receive infrared rays under the control of the control circuit of the driving board 31. In order to ensure that the infrared sensing unit 32 can smoothly emit or receive infrared rays, at least a portion of the infrared sensing unit 32 is located between the first surface 101 and the first limiting portion 212, that is, the infrared sensing unit 32 is at least partially higher than the first surface 101, so that infrared rays can be emitted from a side of the first surface 101 away from the second surface 102. Meanwhile, the infrared sensing unit 32 does not exceed one end of the first limiting portion 212 far away from the main body portion 211.
Herein, the infrared sensing unit 32 that emits infrared rays is defined as an infrared emitting unit, the infrared sensing unit 32 that receives infrared rays is defined as an infrared receiving unit, and accordingly, the infrared sensing apparatus 3 having an infrared emitting unit is an infrared emitting apparatus, and the infrared sensing apparatus 3 having an infrared receiving unit is an infrared receiving apparatus.
The infrared emitting device and the infrared receiving device are respectively disposed in the limiting grooves 100 of the two opposite frame strips 21, for example, the driving board 31 can be disposed in the limiting groove 100 and detachably connected to the first limiting portion 212 and the second limiting portion 213, and the infrared sensing unit 32 is disposed in a partial region of the driving board 31 near the surface of the display panel 1. In some embodiments of the present disclosure, the first limiting portion 212 is provided with a first groove 2122 at a position corresponding to the driving plate 31, the second limiting portion 213 is provided with a second groove 2132 at a position corresponding to the driving plate 31, and the driving plate 31 is inserted into the first groove 2122 and the second groove 2132. Meanwhile, the first groove 2122 and the second groove 2132 may penetrate in the longitudinal direction of the frame strip 21, so that the driving plate 31 may slide in or out from the end of the frame strip 21. Of course, other ways of mounting the drive plate 31 within the restraint slot 100 are possible.
The infrared transmitting units and the infrared receiving units are arranged in a one-to-one correspondence mode, one infrared transmitting unit can transmit infrared rays to the corresponding infrared receiving unit, one infrared receiving unit can receive the infrared rays transmitted by the corresponding infrared transmitting unit, an infrared sensing network S can be formed by the infrared transmitting units and the infrared receiving units, and the infrared sensing network S is a plane where the infrared rays transmitted by the infrared transmitting units and the infrared receiving units are located. When a finger or other opaque obstacles block any position of the infrared sensing network S, the touch position can be determined by determining the position of the infrared receiving unit that does not receive infrared rays.
An infrared emitting device can be arranged in the limiting groove 100 of the first frame strip, and an infrared receiving device can be arranged in the limiting groove 100 of the second frame strip; or, the first frame strip may have an infrared emitting device disposed in the limiting groove 100, and the second frame strip may have an infrared receiving device disposed in the limiting groove 100.
In some embodiments of the present disclosure, the frame 2 has a rectangular structure and has two first frame strips and two second frame strips, an infrared emitting device may be disposed in the limiting groove 100 of the two first frame strips, and an infrared receiving device is disposed in the limiting groove 100 of the two second frame strips, so that an infrared sensing network S capable of sensing touch operations in the length direction and the width direction may be formed, and the position of the touch area in the length direction and the width direction may be determined by determining the position of the infrared receiving unit that does not receive infrared rays.
As shown in fig. 1, 3 and 4, in order to avoid the influence of stray light on the touch precision, light other than infrared rays emitted or received by the infrared sensing device 3 may be filtered by the infrared filter strip 4, for example, the infrared filter strip 4 may at least shield visible light and may transmit infrared rays. The infrared filter strip 4 may be defined in a range between the first limiting portion 212 and the second limiting portion 213 of the at least one frame strip 21, and the infrared filter strip 4 is disposed on a side of the infrared sensing device 3 close to the display panel 1 for filtering.
The partial area of infrared filtering strip 4 can be limited in between first spacing portion 212 and first face 101, and with first face 101 direct contact, thereby can inject infrared filtering strip 4 with the aid of first face 101, need not set up the limit structure who is connected with main part 211 on first face 101, come to inject the position of infrared filtering strip 4 with the cooperation of first spacing portion 212, thereby need not shelter from the infrared ray in order to avoid limit structure, and increase infrared induction unit 32 and first face 101' S distance, be favorable to reducing infrared induction network S and the distance A of first face 101, realize low latitude touch-control, avoid just sensing touch-control operation when far away apart from first face 101, avoid the mistake to touch.
In addition, the orthographic projection of the infrared filter strip 4 on the display substrate 12 is positioned in the peripheral area, so that the shielding of the display area can be avoided.
The following describes in detail the installation of the infrared filter strip 4:
as shown in fig. 1-5, in some embodiments of the present disclosure, a first slot 2121 may be disposed on a surface of the first position-limiting portion 212 close to the first surface 101, and the infrared filter strip 4 may be inserted into the first slot 2121, for example: the infrared filter strip 4 includes a body 41 and a first plugging portion 411, wherein:
the main body 41 may be a strip structure extending along the length direction of the frame strip 21, and at least can be used for shielding visible light and transmitting infrared rays. The body 41 may be limited between the first limiting portion 212 and the first surface 101, and the body 41 may be a rectangular parallelepiped structure, and is disposed perpendicular to the first surface 101 and within a range shielded by the first limiting portion 212. The first inserting portion 411 may be disposed on a surface of the body 41 close to the first position-limiting portion 212, and has a shape matching with the first slot 2121 and is inserted into the first slot 2121. The first socket 411 and the body 41 may adopt an integral structure so as to be formed at the same time. Of course, the refastenable connection can also be made separately.
Further, as shown in fig. 2 and 5, in order to facilitate guiding the first mating part 411 into the first slot 2121, the side wall of the first slot 2121 may be contracted away from the first surface 101, i.e. the cross-section of the first slot 2121 is trapezoidal, i.e. the boundary of the open end of the first slot 2121 is larger than the boundary of the bottom surface. The shape of the first socket 411 matches the shape of the slot.
In some embodiments of the present disclosure, as shown in fig. 1, the display panel 1 has the aforementioned protective cover 14, a second slot 2131 may be disposed on the protective cover 14, and an orthographic projection of the second slot 2131 on the display substrate 12 is located in the peripheral region, so as to avoid notching the display region. The second slot 2131 may be a through hole structure penetrating the protective cover 14, or may not penetrate the protective cover 14.
The infrared filter strip 4 further includes a second inserting portion 421, which can be disposed on the surface of the body 41 close to the first surface 101, and the second inserting portion 421 is inserted into the second slot 2131.
Further, as shown in fig. 1, the second socket portion 421 is provided only partially on the surface of the body 41 close to the first surface 101, and the buffer layer 7 may be provided between the first surface 101 and a region where the second socket portion 421 is not provided for buffering. For example, the surface of the body 41 close to the first surface 101 may include a first region and a second region, the second inserting portion 421 is disposed in the first region, and the infrared filter strip 4 may further include a buffer layer 7 disposed in the second region and clamped between the second region and the first surface 101 for vibrating to damage the display panel 1 and the infrared filter strip 4. The material of the cushioning layer 7 may be a material having elasticity such as foam.
In other embodiments of the present disclosure, as shown in fig. 3, in addition to the body 41, the infrared filter strip 4 further includes a mounting portion 42 and a connecting portion 43, wherein the mounting portion 42 may be attached to and connected to a region of the driving board 31 where the infrared sensing unit 32 is not disposed, for example, the mounting portion 42 and the driving board 31 may be connected by a screw penetrating through the mounting portion 42 and the driving board 31. The connection portion 43 may connect the body 41 and the mounting portion 42. Thus, while the position of the body 41 is defined by the first surface 101 and the first stopper portion 212, the position of the infrared filter strip 4 can be further defined by connecting the mounting portion 42 and the driving board 31, thereby fixing the infrared filter strip 4 in the stopper groove 100.
In some embodiments of the present disclosure, as shown in fig. 4, a second insertion groove 2131 may be formed on a surface of the second limiting portion 213 close to the infrared filter strip 4, and a second insertion portion 421 is disposed on the mounting portion 42, and the two second insertion portions 421 are inserted into the second insertion groove 2131, so that the infrared filter strip 4 is fixed in the limiting groove 100 by the cooperation of the first insertion portion 411 and the first insertion groove 2121, the cooperation of the first limiting portion 212 and the first surface 101, and the cooperation of the second insertion portion 421 and the second insertion groove 2131.
In addition, at least a partial region of the connection portion 43 may be located on a side of the first surface 101 close to the second surface 102 and may abut against the display panel 1, for example, the connection portion 43 may abut against an outer circumferential surface of the protective cover 14, so that the display panel 1 may be further limited by the connection portion 43.
In some embodiments of the present disclosure, as shown in fig. 3 and 4, the touch display device further includes a back plate 5, both the bezel 2 and the backlight module 11 can be disposed on the back plate 5, and the back plate 5 can be detachably connected to at least a portion of the frame strip 21 of the bezel 2. For example, the surface of the back plate 5 near the frame 2 may be provided with a boss 51, at least a portion of the frame strip 21 of the frame 2 corresponding to the boss 51 may be provided with a clamping hole 22, and the boss 51 may be clamped in the clamping hole 22, so that the frame 2 is fixed on the back plate 5 to prevent the relative position between the two from moving. In order to improve the fixing effect, the above-mentioned bosses 51 may be provided on each frame strip 21, and the bosses are engaged with the respective fastening holes 22 in a one-to-one correspondence.
In order to define the position of the display panel 1 within the bezel 2, in some embodiments of the present disclosure, for the display panel 1 having the backlight module 11, an inner frame 6 may be disposed on a side of the back plate 5 close to the backlight module 11, the inner frame 6 may be a frame-shaped structure surrounding the display panel 1, and the display panel 1 may be defined within the inner frame 6. The inner frame 6 is located within the range of the orthographic projection of the first limiting portion 212 on the back plate 5.
Further, as shown in fig. 3 and 4, the inner wall of inner frame 6 may be provided with a support rib 61, and support rib 61 may extend along the circumferential direction of inner frame 6 and be located between back plate 5 and the surface of inner frame 6 away from back plate 5, so that a partial area of inner frame 6 is located on the side of support rib 61 away from back plate 5, i.e., a partial area of inner frame 6 protrudes beyond support rib 61 in a direction perpendicular to back plate 5. The backlight module 11 can be disposed between the supporting rib 61 and the back plate 5 to limit the backlight module 11, the display substrate 12 can be disposed on the supporting rib 61 to support the display substrate 12 through the supporting rib 61, and meanwhile, the position of the display substrate 12 can be limited by the area of the inner frame 6 extending out of the supporting rib 61.
In addition, as shown in fig. 3, in order to reduce the influence of the moisture entering the frame 2 on the display panel 1, a moisture channel may be formed in the frame 2, for example: gaps are formed between the surface of the inner frame 6 far away from the back plate 5 and the connecting portion 43 of the infrared filter strip 4, between the outer wall of the inner frame 6 and the mounting portion 42, and between the second limiting portion 213 and the inner frame 6, and the gaps are communicated, so that the water vapor entering from between the body 41 and the first surface 101 can be discharged from the gaps through the joint surfaces between the frame strips 21 and the back plate 5, and the specific path is as shown in fig. 3. Thereby reducing the water vapor entering between the backlight module 11 and the display substrate 12. Further, in order to increase the effect of discharging water vapor, the surface of the inner frame 6 away from the back plate 5 may be an inclined surface, and the distance between the inclined surface and the back plate 5 gradually decreases along the direction toward the outer side of the display panel 1, which is beneficial to increasing the gap between the surface of the inner frame 6 away from the back plate 5 and the connecting portion 43 of the infrared filter strip 4.
In other embodiments of the present disclosure, the inner frame 6 may be used to define an organic light emitting diode display panel or a liquid crystal display panel of other structure, which is not particularly limited herein.
The present disclosure also provides a terminal device, which may include the touch display device of any of the above embodiments, and the structure and the beneficial effects of the touch display device may refer to the above embodiments, which are not described herein again, and the terminal device may be an electronic whiteboard, a television, and other devices having an image display function and a touch function, which are not listed herein.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (16)

1. A touch display device, comprising:
the display panel is provided with a first surface and a second surface which are opposite, and the display panel comprises a display area and a peripheral area outside the display area; the first surface is positioned in the area of the display area and used for emitting light rays;
the frame is surrounded by a plurality of frame strips which surround the display panel; the frame strip comprises a main body part, a first limiting part and a second limiting part, wherein the first limiting part and the second limiting part are connected to the surface, close to the display panel, of the main body part; the first limiting part is positioned on one side of the first surface, which is far away from the second surface, and extends into the peripheral area; the second limiting part is positioned on one side of the first limiting part close to the second surface, and a limiting groove is formed between the second limiting part and the first limiting part; the frame strips comprise a first frame strip and a second frame strip which are arranged oppositely;
the infrared induction device is arranged in the limiting groove of the frame strip and comprises an infrared induction unit, and at least part of the infrared induction unit is positioned between the first surface and the first limiting part; one of the infrared induction units in the limiting groove of the first frame strip and the infrared induction units in the limiting groove of the second frame strip is used for emitting infrared rays, and the other one is used for receiving the infrared rays;
the infrared light filtering strip, at least one the frame strip first spacing portion with it has been injectd between the first face at least partial region of infrared light filtering strip, infrared light filtering strip is located infrared induction system is close to display panel's one side, just infrared light filtering strip with first face direct contact.
2. The touch display device of claim 1, wherein the first position-limiting portion has a first slot; the infrared filter strip includes:
the body is limited between the first limiting part and the first surface;
the first inserting portion is arranged on the surface, close to the first limiting portion, of the body, and the first inserting portion is inserted into the first slot.
3. The touch display device of claim 2, wherein the sidewall of the first slot is retracted away from the first surface, and the shape of the first insertion portion matches the shape of the slot.
4. The touch display device of claim 2, wherein the display panel comprises:
a display substrate;
the protective cover plate is arranged on one side of the display substrate; the surface of the protective cover plate, which is far away from the display substrate, is the first surface, and the surface of the display substrate, which is far away from the protective cover plate, is the second surface; the protective cover plate is provided with a second slot, and the second slot is positioned in the peripheral area;
the infrared filter strip further comprises:
the second inserting portion is arranged on the surface, close to the first face, of the body, and the second inserting portion is inserted into the second slot.
5. The touch display device of claim 4, wherein an orthographic projection of the infrared filter bar on the display panel is located within the peripheral region.
6. The touch display device of claim 4, wherein the surface of the body near the first side comprises a first area and a second area; the second inserting part is arranged in the first area; the infrared filter strip further comprises:
and the buffer layer is arranged in the second area and is in direct contact with the first surface.
7. The touch display device of claim 6, wherein the material of the buffer layer comprises foam cotton.
8. The touch display device of claim 2, wherein the infrared sensing device further comprises:
the driving plate is arranged in the limiting groove and is detachably connected with the first limiting part and the second limiting part; the infrared induction part is arranged on a partial area of the surface of the driving board far away from the display panel.
9. The touch display device of claim 8, wherein the infrared filter bar further comprises:
the mounting part is attached to and connected with the driving plate;
and the connecting part is used for connecting the body and the mounting part.
10. The touch display device according to claim 9, wherein the mounting portion and the driving board are connected by a screw penetrating the mounting portion and the driving board.
11. The touch display device of claim 8, wherein the second position-limiting portion has a second slot; the infrared filter strip further comprises:
the mounting part is provided with a second inserting part which is inserted into the second slot;
and the connecting part is used for connecting the body and the mounting part.
12. The touch display device according to claim 10 or 11, wherein at least a partial region of the connecting portion is located on a side of the first surface close to the second surface, and abuts against the display panel.
13. The touch display device according to claim 1, wherein the display panel comprises a backlight module and a display substrate, and the display substrate comprises an array substrate, and a liquid crystal layer and a color film layer which are arranged on one side of the array substrate away from the backlight module;
the touch display device further includes:
the frame and the backlight module are arranged on the back plate, an inner frame is arranged on one side, close to the backlight module, of the back plate, and the display panel is limited in the inner frame.
14. The touch display device of claim 13, wherein the inner frame has a supporting rib on an inner wall thereof, the backlight module is disposed between the supporting rib and the back plate, and the display substrate is disposed on the supporting rib.
15. The touch display device of claim 13, wherein the back plate has a boss located outside the inner frame, the bezel has a hole, and the boss is engaged with the hole.
16. A terminal device characterized by comprising the touch display device according to any one of claims 1 to 15.
CN202111012898.0A 2021-08-31 2021-08-31 Touch display device and terminal equipment Pending CN113655913A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111012898.0A CN113655913A (en) 2021-08-31 2021-08-31 Touch display device and terminal equipment

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Application Number Priority Date Filing Date Title
CN202111012898.0A CN113655913A (en) 2021-08-31 2021-08-31 Touch display device and terminal equipment

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Publication number Priority date Publication date Assignee Title
CN108595059A (en) * 2018-04-26 2018-09-28 惠州市华星光电技术有限公司 Touch-control display module, touch-control display panel and touch control display apparatus
CN109375835A (en) * 2018-12-03 2019-02-22 青岛海信电器股份有限公司 Touch control display apparatus
CN208834285U (en) * 2018-06-29 2019-05-07 深圳市天英联合教育股份有限公司 Infrared touch frame and display device
CN209842589U (en) * 2019-04-02 2019-12-24 深圳市鸿合创新信息技术有限责任公司 Section bar structure of infrared touch screen, section bar assembly and infrared touch display equipment
CN210270851U (en) * 2019-09-26 2020-04-07 广州视源电子科技股份有限公司 Frame assembly and touch display device comprising same
CN111258104A (en) * 2020-03-30 2020-06-09 深圳市华星光电半导体显示技术有限公司 Display device and manufacturing method thereof
CN211979639U (en) * 2020-03-04 2020-11-20 深圳市鸿合创新信息技术有限责任公司 Infrared touch display screen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108595059A (en) * 2018-04-26 2018-09-28 惠州市华星光电技术有限公司 Touch-control display module, touch-control display panel and touch control display apparatus
CN208834285U (en) * 2018-06-29 2019-05-07 深圳市天英联合教育股份有限公司 Infrared touch frame and display device
CN109375835A (en) * 2018-12-03 2019-02-22 青岛海信电器股份有限公司 Touch control display apparatus
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CN111258104A (en) * 2020-03-30 2020-06-09 深圳市华星光电半导体显示技术有限公司 Display device and manufacturing method thereof

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