CN213545777U - Display screen assembly and electronic equipment - Google Patents
Display screen assembly and electronic equipment Download PDFInfo
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- CN213545777U CN213545777U CN202022395397.2U CN202022395397U CN213545777U CN 213545777 U CN213545777 U CN 213545777U CN 202022395397 U CN202022395397 U CN 202022395397U CN 213545777 U CN213545777 U CN 213545777U
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Abstract
The application discloses display screen subassembly and electronic equipment belongs to and shows technical field. The display screen assembly comprises a glass substrate, a first flexible circuit board and a detection element; one end of the glass substrate is provided with a functional bonding pad and at least one compensation bonding pad; the first flexible circuit board is connected and communicated with the glass substrate through the functional bonding pad and the compensation bonding pad; the detection element is arranged on the glass substrate and electrically connected with the compensation bonding pad, and the detection element is used for detecting the impedance of the compensation bonding pad. In this application embodiment, increase the area of being connected between first flexible circuit board and the glass substrate through a plurality of compensation pads, improve the structural strength of connecting, avoid the structural strength of being connected between first flexible circuit board and the glass substrate to descend, cause the not hard up problem in connection position, detecting element is used for detecting the impedance of compensation pad, can reflect whether compensation pad coupling part is not hard up.
Description
Technical Field
The application belongs to the technical field of display, and particularly relates to a display screen assembly and an electronic device.
Background
With the development of display technology, the technology of display screens is continuously updated, and the technology of thickness, color saturation, contrast and the like is greatly improved. In the existing structure for connecting the FPC and the screen, a black edge with a certain width is formed on the screen. In order to reduce the black edge, the width by which the FPC is connected to the screen is reduced. The reduction in width causes a reduction in structural strength of the connection between the FPC and the screen, resulting in a problem of loosening of the connection portion.
Disclosure of Invention
The purpose of the embodiment of the application is to provide a display screen assembly, can solve the structural strength decline of being connected between FPC and the screen, cause the not hard up problem of connection position.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a display screen assembly, which includes a glass substrate, a first flexible circuit board, and a detection element;
one end of the glass substrate is provided with a functional bonding pad and at least one compensation bonding pad;
the first flexible circuit board is connected and communicated with the glass substrate through the functional bonding pad and the compensation bonding pad;
the detection element is arranged on the glass substrate and electrically connected with the compensation bonding pad, and the detection element is used for detecting the impedance of the compensation bonding pad.
In a second aspect, the present application provides an electronic device, which includes the display screen assembly as described above.
In this application embodiment, increase the area of being connected between first flexible circuit board and the glass substrate through the compensation pad, improve the structural strength who connects, avoid the structural strength who is connected between first flexible circuit board and the glass substrate to descend, cause the not hard up problem in connection position, detecting element is used for detecting the impedance of compensation pad, can reflect whether compensation pad coupling part is not hard up.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present application, in which a first flexible circuit board is electrically connected to a glass substrate.
FIG. 2 is a circuit diagram showing the driver IC testing compensation pads according to one embodiment of the present application.
FIG. 3 is a schematic diagram of a display screen assembly according to an embodiment of the present application.
Description of reference numerals:
101: glass cover plate, 102: optical adhesive layer, 103: a polarizer, 104: encapsulation glass, 105: glass substrate, 1051: functional pad, 1052: compensation pad, 106: foam, 107: first flexible circuit board, 108: second flexible circuit board, 109: detection element, 1091: and detecting the bonding pad.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. The objects distinguished by "first", "second", and the like are usually a class, and the number of the objects is not limited, and for example, the first object may be one or a plurality of objects. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The display screen assembly provided by the embodiment of the present application is described in detail through specific embodiments and application scenarios thereof with reference to the accompanying drawings.
In one embodiment of the present application, there is provided a display screen assembly, as shown in fig. 1, comprising a glass substrate 105, a first flexible circuit board 107, and a detection element 109; one end of the glass substrate 105 is provided with a functional pad 1051 and at least one compensation pad 1052; the first flexible circuit board 107 is connected to and communicates with the glass substrate 105 through the function pads 1051 and the compensation pads 1052.
The detecting element 109 is disposed on the glass substrate 105, the detecting element 109 is electrically connected to the compensation pad 1052, and the detecting element 109 is used for detecting the impedance of the compensation pad 1052.
In this embodiment, the first flexible circuit board 107 leads out signals of the glass substrate 105 through the functional pads 1051 and communicates with the entire apparatus in which the display panel assembly is located. The compensation pad 1052 increases a connection area between the first flexible circuit board 107 and the glass substrate 105, thereby increasing connection strength between the first flexible circuit board 107 and the glass substrate 105.
The connection strength between the first flexible circuit board 107 and the glass substrate 105 is increased, so that the structural strength of the connected part is increased, and the problem of structural looseness of the connected part is avoided.
The number of the compensation pads 1052 determines the connection area between the first flexible circuit board 107 and the glass substrate 105 that can be increased. Those skilled in the art can select different numbers of compensation pads 1052, and the number of compensation pads 1052 can be selected as many as possible without affecting the lamination width of the first flexible circuit board 107 and the glass substrate 105, so as to maximize the area of the connection portion. The width of the stack of the first flexible circuit board 107 and the glass substrate 105 determines the width of the black edge of the screen, and it is protected by the present application that the number of the compensation pads 1052 is reasonably increased on the premise of reducing the black edge.
The detection of the impedance of the compensation pad 1052 by the detection element 109 can derive the connection state of the position where the compensation pad 1052 is electrically connected to the first flexible circuit board 107. For example, in the case where the compensation pad 1052 is normally connected to the first flexible circuit board 107, the detection element 109 can detect that the impedance value of the compensation pad 1052 is a normal value. When the connection between the compensation pad 1052 and the first flexible circuit board 107 is loosened, the impedance between the compensation pad 1052 and the first flexible circuit board 107 is changed from a normal value, so that a change in the connection state between the compensation pad 1052 and the first flexible circuit board 107 can be detected.
Alternatively, the glass substrate 105 is a Low Temperature polysilicon (Low Temperature Poly-Silicon) glass substrate. The pixels and the traces of the display screen are implemented by the glass substrate 105, for example, part of the traces of the display screen are disposed on the surface layer of the glass substrate 105. The outer surface of the wiring is provided with a protective layer to protect the safety of the circuit.
In one embodiment, the number of the compensation pads 1052 is two, and the two compensation pads 1052 are symmetrically arranged on two sides of the functional pad 1051.
In this embodiment. The two compensation pads 1052 are located on both sides of the functional pad 1051 in the longitudinal direction of the stacked region with respect to the functional pad 1051, and are symmetrically arranged. The compensation pads 1052 added on both sides of the functional pad 1051 do not increase the width of the lamination position, that is, the width of the black edge. The width of the black side refers to the width of the portion where the first flexible circuit board 107 is connected to the glass substrate 105, i.e., the depth direction of the lamination.
Thus, the width of the connection portion is not increased after the first flexible circuit board 107 is connected to the functional pad 1051 and the compensation pad 1052, and the width of the black edge is not increased. And the two compensation pads 1052 are connected to the first flexible circuit board 107 at both sides of the functional pad 1052, which can improve the stability of the connection.
The two compensation pads 1052 can avoid the problem that the first flexible circuit board 107 and the glass substrate 105 are connected loosely from the two sides of the functional pad 1051, so that the structural strength is improved, and the reliability of the display screen assembly structure is improved.
The detection element 109 can detect the impedance of the two compensation pads 1052, and the connection state of the two compensation pads 1052 and the first flexible circuit board 107 can be reflected by the impedance values of the two compensation pads 1052. When the compensation bonding pad 1052 is connected with the first flexible circuit board 107, looseness can be found in time, and maintenance is carried out in time, so that the influence on the use of the display screen assembly is reduced.
In one embodiment, anisotropic conductive films are disposed between the first flexible circuit board 107 and the function pads 1051 and the plurality of compensation pads 1052 to electrically connect the first flexible circuit board 107 and the function pads 1051 and the plurality of compensation pads 1052.
The first flexible circuit board 107 is electrically connected to the function pads 1051 and the compensation pads 1052 by gold fingers. An Anisotropic Conductive Film (ACF) is disposed between the first flexible circuit board 107 and the function pads 1051 and the compensation pads 1052, so that electrical connection can be formed between the first flexible circuit board 107 and the function pads 1051 and the compensation pads 1052 through a bonding (FOG) process.
The anisotropic conductive film is filled with conductive gold balls, and after the anisotropic conductive film is arranged between the first flexible circuit board 107 and the functional bonding pad 1051 and the compensation bonding pad 1052, the gold fingers on the first flexible circuit board 107 are conducted with the functional bonding pad 1051 and the compensation bonding pad 1052 through the conductive gold balls by a binding process. The glue on the anisotropic conductive film is cured at high temperature and high pressure to form firm bonding force, and oxidation corrosion caused by water vapor entering the FOG area is avoided. The structural strength of the connection is improved, and delamination or bubbles between the first flexible circuit board 107 and the functional pad 1051 and the compensation pad 1052 can be avoided.
In one embodiment, the detection element 109 sends an alarm signal if the detection element 109 detects that the impedance value of the compensation pad 1052 is greater than a threshold value.
The detection element 109 can derive the connection state of the position where the compensation pads 1052 are electrically connected to the first flexible circuit board 107 by detecting the impedance of each compensation pad 1052. For example, in the case where the compensation pad 1052 is stably connected to the first flexible circuit board 107, the detection element 109 detects the impedance of the compensation pad 1052. In the case where the looseness occurs in the position where the first flexible circuit board 107 is connected to the compensation pad 1052, the impedance of the compensation pad 1052 detected by the detection element 109 is different from that in the case of the stable connection, that is, the impedance is changed. In the case where the connection of the compensation pad 1052 and the first flexible circuit board 107 is loosened, the impedance value of the compensation pad 1052 detected by the detection element 109 is larger than that in the case where the connection is stable. The impedance of the compensation pad 1052 measured by the detection element 109 is the total impedance of the compensation pad 1052 and the corresponding gold finger on the first flexible circuit board 107 bound to the compensation pad 1052. When the detection element 109 detects that the impedance value of the compensation pad 1052 is greater than the threshold, the detection element 109 sends out an alarm signal, and a result corresponding to the looseness of the position where the compensation pad 1052 is located is obtained through the alarm signal.
The threshold value may be obtained by detecting the impedance of the compensation pad 1052 in a stable connection state between the first flexible circuit board 107 and the compensation pad 1052, and prestoring the impedance as the threshold value, and the detection element 109 detects and determines the impedance of the corresponding compensation pad 1052 through the prestored value.
The alarm signal may be provided to the user in the form of a sound or text through the software to alert the user of the connection problem where the compensation pad 1052 is located.
The difference can be embodied by setting software, and the alarm signal displays the detection result through software prompt, for example, the impedance value of different compensation pads 1052 is prompted through software to prompt the detection result of the position where the first flexible circuit board 107 is connected with the corresponding compensation pad 1052.
The detection element 109 detects each compensation pad 1052, and can detect the impedance of the position where the corresponding compensation pad 1052 is located, so as to detect the connection condition of the corresponding position, so as to reflect that the connection problem occurs at the corresponding position.
Optionally, as shown in fig. 1, the detecting element 109 is provided with a detecting pad 1091, and one of the compensating pads 1052 is electrically connected to the detecting element 109 through the detecting pad 1091. A plurality of corresponding detection pads 1091 are provided corresponding to the plurality of compensation pads 1052. One sense pad 1091 is shown as an example.
In one embodiment, the detection element 109 is a display driver chip.
The display driving chip has a function of detecting impedance, and in this embodiment, the display driving chip detects the impedance of each compensation pad 1052 to detect the connection condition in the region of the connection position where the compensation pad 1052 is located. The display driver chip can display the connection condition of the first flexible circuit board 107 and the compensation pad 1052 on the display screen through software.
For example, the first flexible circuit board 107 and the compensation pad 1052 are bonded by the FOG process. The display driver chip detects the impedance of the compensation pad 1052, so that the problems of delamination, bubbles, tearing and the like at the connection position of the first flexible circuit board 107 and the compensation pad 1052, which affect the connection structure, can be reflected. Thereby effectively detecting whether the first flexible circuit board 107 is well connected with the compensation pad 1052.
In one embodiment, the compensation pad 1052 includes a plurality of compensation sub-pads connected in series, and the impedance of the compensation pad 1052 is the impedance of the plurality of compensation sub-pads connected in series.
In this embodiment, the plurality of compensation sub-pads are electrically connected to the first flexible circuit board 107, for example, the plurality of compensation sub-pads are electrically connected to the plurality of gold fingers on the first flexible circuit board 107 correspondingly. The plurality of compensation sub-pads can provide more connection locations to further increase the connection strength between the first flexible circuit board 107 and the glass substrate 105.
The detection element 109 detects the impedance of the plurality of compensation sub-pads after being connected in series. When the position of one of the compensation sub-pads is loose, the impedance value after series connection is larger than the threshold value, and the detection element 109 can detect that the position of the compensation pad 1052 is loose and send out an alarm signal. The provision of the plurality of compensation sub-pads can increase the range of the connection region of the glass substrate 105 and the first flexible circuit board 107, thereby increasing the detection area of the detection element 109 for detecting the compensation pads 1052 and increasing the detection sensitivity of the detection element 109 for the compensation pads 1052.
In one embodiment, as shown in fig. 1 and 2, the plurality of compensation sub-pads include a first pad, a second pad and a third pad, the first pad, the second pad and the third pad are connected in series, and the impedance of the compensation pad is the impedance of the first pad, the second pad and the third pad after being connected in series. The corresponding first pad has an impedance of R-FPG1, the second pad has an impedance of R-FPG2, and the third pad has an impedance of R-FPG 3.
The detection element 109 is used for detecting the impedance of the first bonding pad, the second bonding pad and the third bonding pad after being connected in series. When the connection looseness problem occurs at the position of one of the first bonding pad, the second bonding pad and the third bonding pad, the impedance changes, and therefore the looseness occurring at the connection position is detected. The display screen assembly connection structure has problems such as delamination or bubbles. The compensation pads 1052 are formed by connecting the first pad, the second pad, and the third pad in series, and the detection precision can be improved by detecting the corresponding three positions by the detection element 109. When the position of one bonding pad is loose, the impedance can be detected to be larger than the threshold value in time, and an alarm is given out.
Optionally, the plurality of compensation sub-pads are arranged in an array. For example, each compensation sub-pad extends in the width direction of the region where the first flexible circuit board 107 and the glass substrate 105 are laminated. The plurality of compensation sub-pads are arrayed along the length direction of the lamination area.
The plurality of compensation sub-pads extend in the width direction of the stacked region, and the sensitivity in the width direction during the inspection by the inspection element 109 can be increased. In the width direction, the condition that the extending area of the compensation sub-bonding pad is loosened can be reflected on the impedance value after the plurality of compensation sub-bonding pads are connected in series, so that the detection sensitivity in the width direction is increased.
For example, each compensation sub-pad extends in the length direction of the region where the first flexible circuit board 107 and the glass substrate 105 are laminated. The plurality of compensation sub-pads are arrayed along the length direction of the lamination area.
Each of the compensation sub-pads extends in the longitudinal direction of the laminated region, and the detection sensitivity of the detection element 109 in the longitudinal direction can be improved. The occurrence of the looseness in the region where the compensation sub-pad extends is reflected in the impedance value of the compensation sub-pad after the compensation sub-pad is connected in series, thereby increasing the sensitivity of detection in the length direction.
For example, the extending direction of the plurality of compensation sub-pads may be inclined to the width direction of the lamination region, and the plurality of compensation sub-pads may be arrayed in parallel.
For example, the compensation sub-pads are connected in series end to end, so that the detection element 109 can detect the area where each compensation sub-pad is located. The gold fingers on the corresponding first flexible circuit board 107 for making electrical connection with the compensation sub-pads are of the same structure as the corresponding compensation sub-pads.
Optionally, the functional pad 1051 includes a plurality of functional sub-pads, and the body directions of the functional sub-pads and the compensation sub-pads are the same.
Body direction identity refers to the direction of the structural body. For example, the compensation sub-pad and the functional sub-pad are both the same structure as the gold finger at the connection location, thereby facilitating the formation of the connection on the glass substrate 105 and the gold finger on the first flexible circuit board 107. The length direction of the plurality of functional sub-pads is the same as the length direction of the compensation sub-pad, and the width direction is also the same. Therefore, under the condition of looseness, the compensation sub-pad position can also be loosened, and the looseness of the position of the functional pad 1051 is avoided, so that the reliability of impedance detection of the detection element 109 is guaranteed.
In one embodiment, as shown in FIG. 3, the display screen assembly further includes an encapsulation glass 104 and a second flexible circuit board 108; the encapsulation glass 104 is laminated with the glass substrate 105, the second flexible circuit board 108 is electrically connected with the encapsulation glass 104, and the second flexible circuit board 108 is used for leading out a touch signal onto the first flexible circuit board 107.
In this embodiment, the touch signal received by the packaging glass 104 is led out to the first flexible circuit board 107 through the second flexible circuit board 108, and the touch signal is led out through the first flexible circuit board 107 to communicate with the whole device.
In one embodiment, as shown in fig. 3, the display panel assembly further includes a polarizer 103 and a glass cover plate 101, the polarizer 103 is laminated on a side of the encapsulation glass 104 opposite to the glass substrate 105, the glass cover plate 101 is laminated on a side of the polarizer 103 opposite to the encapsulation glass 104, and an optical adhesive layer 102 is disposed between the polarizer 103 and the glass cover plate 101.
In this embodiment, the polarizer 103 can filter out veiling glare in the display screen to enhance visual acuity and to increase color contrast and maximum visual comfort. The glass cover plate 101 provides protection for the display screen assembly at the outer layer. The optical adhesive layer 102 can enhance the optical effect, and is made of a transparent material.
The user triggers the outermost glass cover plate to trigger the touch signal, and the touch signal is led out through the first flexible circuit board 107 to be communicated with the whole equipment.
In one embodiment, as shown in fig. 3, the first flexible circuit board 107 is laminated on a side of the glass substrate 105 facing away from the package glass 104, the first flexible circuit board 107 is provided with a first connection portion, the first flexible circuit board 107 is electrically connected with the function pads 1051 and the plurality of compensation pads 1052 through the first connection portion, the second flexible circuit board 108 is laminated on a side of the first flexible circuit board 107 facing away from the glass substrate 105, the second flexible circuit board 108 is provided with a second connection portion, and the second flexible circuit board 108 is electrically connected with the package glass 104 through the second connection portion.
The first flexible circuit board 107 and the second flexible circuit board 108 are stacked, so that the display screen assembly is compact in structure, and the occupation of too much space of the whole display screen assembly is avoided. The first connection portion is electrically connected to the function pad 1051 and the compensation pad 1052 on the glass substrate 105 by bypassing the end portion of the glass substrate 105. The functional pads 1051 and the compensation pads 1052 are located on the side opposite to the side of the glass substrate 105 on which the first flexible circuit board 107 is laminated. Likewise, the second electrical connection portion is electrically connected to the sealing glass around the end portion of the first flexible circuit board 107, the end portion of the glass substrate 105, and the end portion of the sealing glass 104.
In one embodiment of the application, an electronic device is provided, and the electronic device comprises the display screen assembly in any one of the embodiments.
In the electronic device, the state of the connection part of the first flexible circuit board 107 and the compensation pad 1052 on the glass substrate 105 can be detected, so that whether the connection of the first flexible circuit board 107 and the glass substrate 105 is loosened due to layering or tearing is detected, and the safety of the device is improved.
In addition, whether the connection is stable or not can be detected through the detection element 109 in the display screen assembly detection process, and the detection efficiency is improved.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A display screen assembly is characterized by comprising a glass substrate, a first flexible circuit board and a detection element;
one end of the glass substrate is provided with a functional bonding pad and at least one compensation bonding pad;
the first flexible circuit board is connected and communicated with the glass substrate through the functional bonding pad and the compensation bonding pad;
the detection element is arranged on the glass substrate and electrically connected with the compensation bonding pad, and the detection element is used for detecting the impedance of the compensation bonding pad.
2. The display screen assembly of claim 1, wherein the number of the compensation pads is two, and the two compensation pads are symmetrically arranged on two sides of the functional pad.
3. The display screen assembly of claim 1, wherein an anisotropic conductive film is disposed between the first flexible circuit board and the functional pads and the compensation pads to electrically connect the first flexible circuit board to the functional pads and the compensation pads.
4. The display screen assembly of claim 1, wherein the detection element issues an alarm signal if the detection element detects that the impedance value of the compensation pad is greater than a threshold value.
5. The display screen assembly of claim 1, wherein the sensing element is a display driver chip.
6. The display screen assembly of claim 1, wherein the compensation pad comprises a plurality of compensation sub-pads, the plurality of compensation sub-pads are connected in series, and the impedance of the compensation pad is the impedance of the plurality of compensation sub-pads after being connected in series.
7. The display screen assembly of claim 6, wherein the functional pad comprises a plurality of functional sub-pads, the functional sub-pads oriented in the same direction as the body of the compensation sub-pad.
8. The display screen assembly of claim 1, further comprising an encapsulation glass and a second flexible circuit board;
the packaging glass is laminated with the glass substrate, the second flexible circuit board is electrically connected with the packaging glass, and the second flexible circuit board is used for leading out a touch signal to the first flexible circuit board.
9. The display screen assembly of claim 8, wherein the first flexible circuit board is laminated on a side of the glass substrate facing away from the packaging glass, the first flexible circuit board is provided with a first connection portion, the first flexible circuit board is electrically connected with the functional pad and the plurality of compensation pads through the first connection portion, the second flexible circuit board is laminated on a side of the first flexible circuit board facing away from the glass substrate, the second flexible circuit board is provided with a second connection portion, and the second flexible circuit board is electrically connected with the packaging glass through the second connection portion.
10. An electronic device comprising a display screen assembly according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022395397.2U CN213545777U (en) | 2020-10-23 | 2020-10-23 | Display screen assembly and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022395397.2U CN213545777U (en) | 2020-10-23 | 2020-10-23 | Display screen assembly and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213545777U true CN213545777U (en) | 2021-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022395397.2U Active CN213545777U (en) | 2020-10-23 | 2020-10-23 | Display screen assembly and electronic equipment |
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|---|---|
| CN (1) | CN213545777U (en) |
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2020
- 2020-10-23 CN CN202022395397.2U patent/CN213545777U/en active Active
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