CN114994970A - Display module howling suppression method and assembly method - Google Patents

Display module howling suppression method and assembly method Download PDF

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Publication number
CN114994970A
CN114994970A CN202210700102.9A CN202210700102A CN114994970A CN 114994970 A CN114994970 A CN 114994970A CN 202210700102 A CN202210700102 A CN 202210700102A CN 114994970 A CN114994970 A CN 114994970A
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backlight
value
static
film material
static electricity
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CN202210700102.9A
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Chinese (zh)
Inventor
魏玲枫
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Truly Opto Electronics Ltd
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Truly Opto Electronics Ltd
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Priority to CN202210700102.9A priority Critical patent/CN114994970A/en
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/1306Details
    • G02F1/1309Repairing; Testing
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05FSTATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00Carrying-off electrostatic charges

Abstract

The invention discloses a display module howling suppression method and an assembly method, which are used for suppressing the howling of a mobile phone display module, and comprise the steps of eliminating the static electricity of each film material of a backlight structure before assembly; controlling the electrostatic value of the membrane material in the assembling process to enable the electrostatic value of each membrane material to meet the requirement of a preset value; and (3) testing the electrostatic values of the membrane material before and after electrification. The static electricity of the backlight film is eliminated before the assembly, the static electricity of the supplied materials is eliminated, the static electricity value of each backlight film is controlled in the assembly process to enable the static electricity value to meet the static electricity preset value requirement of the film, the static electricity value of the backlight structure finished product of the display module is controlled after the assembly is finished to enable the static electricity value to meet the static electricity preset value requirement of the backlight structure finished product, the condition that the backlight film forms an electric field is eliminated, and the problems that self-oscillation phenomenon is generated and squeaking occurs when periodic electrical property changes due to the structure of the electric field are solved.

Description

Display module howling suppression method and assembly method
Technical Field
The invention relates to the field of manufacturing processes of mobile phone display modules, in particular to a display module restraining method and an assembling method.
Background
The backlight source is a light source positioned at the back of the liquid crystal display and is an extremely important part in the electronic display device; the backlight source mainly comprises a light source, a light guide plate, an optical die sheet and a structural assembly, wherein a back plate and a rubber frame are indispensable in the structural assembly.
Generally, the board is shaded to the sun, flexible circuit board (FPC) and Liquid Crystal Display (LCD) pass through the sticky iron frame that pastes of electrically conductive glue on the iron frame, and flexible circuit board (FPC), Liquid Crystal Display (LCD) and the iron frame that is shaded are earthed together, and when Liquid Crystal Display (LCD) lighted, form the electric field between Thin Film Transistor (TFT) and the iron frame that is shaded, have pressure differential between Thin Film Transistor (TFT) and the iron frame that is shaded, can be in a poor light the inside self-oscillation that takes place of membrane material, also be exactly screen squeaking, seriously influence user experience degree.
Fig. 1 is a structural diagram of a display module of a mobile phone, a TFT panel and a backlight iron frame are two conductive planes, and air and a backlight film between the panel and the backlight iron frame serve as a medium to form an electric field structure. The TFT panel is provided with Touch scan signals with fixed frequency, when the TFT panel is periodically electrically changed, a voltage difference is formed between the TFT panel and the backlight iron frame to generate self-oscillation, and further the inside of the backlight film material generates periodic vibration to generate squeaking.
Fig. 2 is a structural diagram of the interior of the backlight film material of the display module, which mainly comprises an upper and a lower brightness enhancement film, a diffusion film, a reflection film, a light guide plate, an LED, and a backlight iron frame. At present, the industry generally controls the static electricity of a backlight finished product, the requirement is less than 500V, and the static electricity of a single-layer film material is not controlled independently. However, analysis shows that when the static electricity of the backlight finished product meets the standard, the static electricity of the upper and lower brightness enhancement films, the diffusion film, the reflection film or the single-layer film material of the light guide plate exceeds a certain value, and whistling is generated.
Disclosure of Invention
Because an electric field structure is formed between the internal structures of the existing mobile phone display module and the backlight module, when the electric property changes periodically, a self-oscillation phenomenon is generated, and squeaking occurs.
In order to solve the problems, the static electricity of the backlight film materials is eliminated before the assembly, the static electricity of the supplied materials is eliminated, the static electricity value of each backlight film material is controlled in the assembly process to enable the static electricity value to meet the preset static electricity value requirement of the film material, the static electricity value of the finished backlight structure of the display module is controlled after the assembly is finished to enable the finished backlight structure to meet the preset static electricity value requirement of the finished backlight structure, the condition that the backlight film materials form an electric field is eliminated, and the problems that self-oscillation phenomenon is generated and squeaking occurs when the periodic electrical property changes due to the structure of the electric field are solved.
In a first aspect, a display module howling suppression method for suppressing a "howling" of a mobile phone display module includes:
step 100, eliminating static electricity of each film material of the backlight structure before assembly;
step 200, controlling the electrostatic value of the membrane material in the assembling process so that the electrostatic value of each membrane material meets the requirement of a preset value;
wherein the step 200 comprises:
and step 210, testing the electrostatic values of the membrane material before and after electrification respectively.
In combination with the method for suppressing display module howling according to the first aspect of the present invention, in a first possible implementation manner, the step 100 includes:
110, detecting and acquiring an electrostatic value of each backlight film material to be assembled;
step 120, performing a static elimination treatment on each backlight film material;
and step 130, performing secondary static elimination processing on the backlight film according to the residual static value to determine that the static of the backlight film is completely eliminated.
With reference to the first possible implementation manner of the first aspect of the present invention, in a second possible implementation manner, the step 120 includes:
step 121, determining a static elimination duration according to the static value of each backlight film material;
and step 122, respectively blowing the backlight film material monomers by using an ion fan.
With reference to the second possible implementation manner of the first aspect of the present invention, in a third possible implementation manner, the step 130 includes:
131, detecting the static value of the backlight film material monomer subjected to the primary static elimination treatment by using a static tester;
and 132, if the backlight film material monomer still has residual static electricity, performing secondary static electricity elimination processing on the backlight film material monomer by using an ion fan until the static electricity of the backlight film material is completely eliminated.
With reference to the third possible implementation manner of the first aspect of the present invention, in a fourth possible implementation manner, the step 210 includes:
step 211, detecting the static value of the backlight film material before assembly after power-up by using a static tester;
step 212, if the electrostatic value of the backlight film material before assembly after power-up is larger than a preset value, performing step 213;
step 213, performing static elimination treatment on the electrified backlight film material until the electrified backlight film material meets the requirement of a preset value;
the requirements of the electrostatic preset value of the backlight film material comprise:
the upper brightness enhancement film is less than 3 KV;
the lower brightness enhancement film is less than 3 KV;
the diffusion film is less than 2 KV;
the light guide plate is less than 3 KV;
the reflective film is less than 3 KV.
With reference to the fourth possible implementation manner of the first aspect of the present invention, in a fifth possible implementation manner, the step 210 further includes:
step 214, attaching and assembling the backlight film material meeting the requirement of the preset value;
step 215, performing static electricity detection on the assembled backlight structure finished product, and if the static electricity detection is smaller than a preset value, finishing static electricity elimination of the backlight film material.
With reference to the fifth possible implementation manner of the first aspect of the present invention, in a sixth possible implementation manner, the step 210 further includes:
step 216, performing electrostatic detection on the assembled backlight structure finished product, and if the electrostatic detection is larger than a preset value, performing step 217;
step 217, performing static elimination treatment on the backlight structure finished product until the backlight structure finished product meets the requirement of a preset value;
the static preset value requirement of the backlight structure finished product is as follows:
the electrostatic value of the finished product of the backlight structure is less than 500V.
In a second aspect, a method for assembling a display module includes:
step 300, before assembling, eliminating the static electricity of each backlight film material by using the static electricity elimination processing method of the first aspect, so that each backlight film material meets the requirement of a preset value;
step 400, controlling the static value of each backlight film material by using the static elimination processing method of the first aspect in the assembling process;
step 500, assembling the backlight film materials meeting the requirement of a preset value together according to the backlight structure of the display module;
step 600, after the assembly, the static value of the backlight structure finished product is controlled by using the static elimination processing method described in the first aspect.
In a first possible implementation manner of the method for assembling a display module according to the second aspect of the present invention, the step 400 includes:
step 410, before assembly, detecting the electrostatic value of the backlight film material after power-on, and if the electrostatic value of the backlight film material is greater than a preset value, performing the next step;
step 420, performing static elimination processing on the backlight film material until the static value of the backlight film material after power-on meets the preset static value requirement of the backlight film material;
wherein, the requirement of the preset static electricity value of the backlight film material comprises the following steps:
the upper brightness enhancement film is less than 3 KV;
the lower brightness enhancement film is less than 3 KV;
the diffusion film is less than 2 KV;
the light guide plate is less than 3 KV;
the reflective film is less than 3 KV.
In a second possible implementation manner of the method for assembling a display module according to the second aspect of the present invention, the step 500 includes:
step 510, attaching and assembling the backlight film material meeting the requirement of a preset value;
step 520, performing static electricity detection and static electricity elimination treatment on the assembled backlight structure finished product until the preset static electricity value requirement of the backlight structure finished product is met;
the static preset value requirements of the finished product of the backlight structure are as follows:
the electrostatic value of the finished product of the backlight structure is less than 500V.
According to the display module squeaking suppression method and the assembly method, static electricity of incoming materials is eliminated by eliminating the static electricity of the backlight film materials before assembly, the static electricity value of each backlight film material is controlled in the assembly process to meet the static electricity preset value requirement of the film material, the static electricity value of the backlight structure finished product of the display module is controlled after the assembly is finished to meet the static electricity preset value requirement of the backlight structure finished product, the condition that the backlight film materials form an electric field is eliminated, and the problems that self-excited oscillation phenomenon occurs and squeaking occurs when periodic electrical property changes due to the structure of the electric field are solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a diagram of a first embodiment of a display module howling suppression method according to the present invention;
FIG. 2 is a diagram of a display module howling suppression method according to a second embodiment of the present invention;
FIG. 3 is a diagram of a display module howling suppression method according to a third embodiment of the present invention;
FIG. 4 is a diagram of a fourth embodiment of a display module howling suppression method according to the present invention;
FIG. 5 is a diagram illustrating a fifth embodiment of a method for suppressing howling in a display module according to the present invention;
FIG. 6 is a diagram of a sixth embodiment of a display module howling suppression method according to the present invention;
FIG. 7 is a diagram of a display module howling suppression method according to a seventh embodiment of the present invention;
FIG. 8 is a schematic view of a display module assembly method according to a first embodiment of the present invention;
FIG. 9 is a schematic view of a display module assembly method according to a second embodiment of the present invention;
FIG. 10 is a diagram of a display module assembly method according to a third embodiment of the present invention.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Other embodiments, which can be derived by one of ordinary skill in the art from the embodiments given herein without any creative effort, shall fall within the protection scope of the present invention.
An electric field structure is formed between the internal structures of the existing mobile phone display module and the backlight module, so that when the electric property is periodically changed, a self-oscillation phenomenon is generated, and howling occurs.
In order to solve the above problems, a display module restraining method and an assembling method are provided.
First embodiment of a display module howling suppression method according to the present invention
On the first hand, as shown in fig. 1, fig. 1 is a schematic diagram of a first embodiment of a display module howling suppression method according to the present invention; a display module squealing suppression method is used for suppressing the squealing of a mobile phone display module, and comprises the following steps of 100, eliminating the static electricity of each film material of a backlight structure before assembly; step 200, controlling the electrostatic value of the membrane material in the assembling process so that the electrostatic value of each membrane material meets the requirement of a preset value; wherein, step 200 comprises: and step 210, testing the electrostatic values of the membrane material before and after electrification respectively. The static electricity of the backlight film is eliminated before the assembly, the static electricity of the incoming materials is eliminated, the static electricity value of each backlight film is controlled in the assembly process to enable the static electricity value to meet the static electricity preset value requirement of the film, the static electricity value of the finished backlight structure of the display module is controlled after the assembly is completed to enable the static electricity value to meet the static electricity preset value requirement of the finished backlight structure, the condition that the backlight film forms an electric field is eliminated, and the problems that self-oscillation phenomena occur and squeaking occurs when periodic electrical property changes due to the structure of the electric field are solved.
Second embodiment of a display module howling suppression method according to the present invention
Preferably, as shown in fig. 2, fig. 2 is a schematic view of a display module howling suppression method according to a second embodiment of the present invention; the step 100 comprises: 110, detecting and acquiring an electrostatic value of each backlight film material to be assembled; 120, performing primary static elimination treatment on each backlight film material; and step 130, performing secondary static elimination processing on the backlight film according to the residual static value to determine that the static of the backlight film is completely eliminated.
Third embodiment of a display module howling suppression method according to the present invention
Preferably, as shown in fig. 3, fig. 3 is a schematic view of a display module howling suppression method according to a third embodiment of the present invention; step 120 includes: step 121, determining a static elimination duration according to the static value of each backlight film material; and step 122, respectively blowing the backlight film material monomers by using an ion fan.
Fourth embodiment of a display module howling suppression method according to the present invention
Preferably, as shown in fig. 4, fig. 4 is a schematic view of a fourth embodiment of a display module howling suppression method according to the present invention; step 130 comprises: 131, detecting the static value of the backlight film monomer subjected to the primary static elimination treatment by using a static tester; and 132, if the backlight film material monomer still has residual static electricity, performing secondary static electricity elimination processing on the backlight film material monomer by using an ion fan until the static electricity of the backlight film material is completely eliminated.
The backlight film material can have certain static electricity, less is several kv, more is dozens kv, and before assembly, the ion fan is used for blowing the backlight film material monomer to eliminate the static electricity of the backlight film material. And then testing the static electricity of the backlight film material by using a static electricity tester to detect whether the static electricity is completely eliminated.
Fifth embodiment of a display module howling suppression method according to the present invention
Preferably, as shown in fig. 5, fig. 5 is a schematic diagram of a fifth embodiment of a display module howling suppression method according to the present invention; step 210 comprises: step 211, detecting the static value of the backlight film material before assembly after power-up by using a static tester; step 212, if the electrostatic value of the backlight film material before assembly after power-up is larger than a preset value, performing step 213; and 213, performing static elimination treatment on the electrified backlight film material until the electrified backlight film material meets the requirement of a preset value.
Because the backlight film needs to be electrostatically assembled, the electrostatic adsorption is utilized for alignment, and if no electrostatic adsorption is applied, the assembly deviation of the backlight film can occur. Applying static electricity to the backlight film material (the applied static electricity value is smaller than a set value), after the static electricity is added, testing the static electricity value of the single film material before attachment after the static electricity is added by using a static electricity tester, wherein the specification is as follows:
the upper brightness enhancement film is less than 3 KV;
the lower brightness enhancement film is less than 3 KV;
the diffusion film is less than 2 KV;
the light guide plate is less than 3 KV;
the reflective film is less than 3 KV.
Sixth embodiment of a display module howling suppression method according to the present invention
Preferably, as shown in fig. 6, fig. 6 is a schematic view of a sixth embodiment of a display module howling suppression method according to the present invention; step 210 further comprises: step 214, attaching and assembling the backlight film material meeting the requirement of the preset value; step 215, performing static electricity detection on the assembled backlight structure finished product, and if the static electricity detection is smaller than a preset value, finishing static electricity elimination of the backlight film material.
Seventh embodiment of a display module howling suppression method according to the present invention
Preferably, as shown in fig. 7, fig. 7 is a schematic view of a seventh embodiment of a display module howling suppression method according to the present invention; step 210 further comprises: and step 216, performing electrostatic detection on the assembled backlight structure finished product, and if the electrostatic detection is larger than a preset value, performing step 217. And 217, performing static elimination treatment on the backlight structure finished product until the backlight structure finished product meets the requirement of a preset value.
After the membrane material is attached, testing the assembled static electricity, and meeting the static electricity specification of the membrane material, wherein the final finished product meets the static electricity requirement, and the static electricity preset value requirement of the backlight structure finished product is as follows:
the electrostatic value of the finished product of the backlight structure is less than 500V.
The first embodiment of the display module assembly method of the present invention
In a second aspect, as shown in fig. 8, fig. 8 is a schematic view of a first embodiment of a display module assembly method according to the present invention; a display module assembly method includes: step 300, before assembling, eliminating the static electricity of each backlight film material by using the static electricity elimination processing method of the first aspect, so that each backlight film material meets the requirement of a preset value; step 400, controlling the static value of each backlight film material by using the static elimination processing method of the first aspect in the assembling process; step 500, assembling the backlight film materials meeting the requirement of a preset value together according to the backlight structure of the display module; and step 600, controlling the static value of the backlight structure finished product by using the static elimination processing method of the first aspect after assembly.
Second embodiment of a display module assembly method according to the present invention
Preferably, as shown in fig. 9, fig. 9 is a schematic view of a second embodiment of an assembling method of a display module according to the present invention; step 400 comprises: step 410, before assembly, detecting the electrostatic value of the backlight film material after power-on, and if the electrostatic value of the backlight film material is greater than a preset value, performing the next step; step 420, performing static elimination processing on the backlight film material until the static value of the backlight film material after power-on meets the preset static value requirement of the backlight film material; wherein, the requirement of the electrostatic preset value of the backlight film material comprises the following steps:
the upper brightness enhancement film is less than 3 KV;
the lower brightness enhancement film is less than 3 KV;
the diffusion film is less than 2 KV;
the light guide plate is less than 3 KV;
the reflective film is less than 3 KV.
Preferably, as shown in fig. 10, fig. 10 is a schematic view of a display module assembly method according to a third embodiment of the present invention. Step 500 comprises: step 510, attaching and assembling the backlight film material meeting the requirement of a preset value; step 520, performing static electricity detection and static electricity elimination treatment on the assembled backlight structure finished product until the preset static electricity value requirement of the backlight structure finished product is met;
the static preset value requirement of the backlight structure finished product is as follows:
the electrostatic value of the finished product of the backlight structure is less than 500V.
According to the display module howling suppression method and the assembly method, static electricity of incoming materials is eliminated by eliminating the static electricity of the backlight film materials before assembly, the static electricity value of each backlight film material is controlled in the assembly process to meet the preset static electricity value requirement of the film material, and the static electricity value of the finished backlight structure of the display module is controlled after the assembly is finished to meet the preset static electricity value requirement of the finished backlight structure, so that the condition that the backlight film materials form an electric field is eliminated, and the problem that howling occurs due to the fact that the electric field structure generates a self-excited oscillation phenomenon when periodic electrical property changes is solved.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A display module howling suppression method is used for suppressing the howling of a mobile phone display module, and is characterized by comprising the following steps:
step 100, eliminating static electricity of each film material of the backlight structure before assembly;
step 200, controlling the electrostatic value of the membrane material in the assembling process so that the electrostatic value of each membrane material meets the requirement of a preset value;
wherein the step 200 comprises:
and step 210, testing the static values of the membrane materials before and after electrification respectively.
2. The display module howling suppression method according to claim 1, wherein the step 100 comprises:
110, detecting and acquiring the static value of each backlight film to be assembled;
120, performing primary static elimination treatment on each backlight film material;
and step 130, performing secondary static elimination processing on the backlight film according to the residual static value to determine that the static of the backlight film is completely eliminated.
3. The display module howling suppression method according to claim 2, wherein the step 120 comprises:
step 121, determining a static elimination duration according to the static value of each backlight film material;
and step 122, respectively blowing the backlight film material monomers by using an ion fan.
4. The display module howling suppression method according to claim 3, wherein the step 130 comprises:
131, detecting the static value of the backlight film material monomer subjected to the primary static elimination treatment by using a static tester;
and 132, if the backlight film material monomer still has residual static electricity, performing secondary static electricity elimination processing on the backlight film material monomer by using an ion fan until the static electricity of the backlight film material is completely eliminated.
5. The display module howling suppression method according to claim 4, wherein the step 210 comprises:
step 211, detecting the static value of the backlight film material before assembly after power-up by using a static tester;
step 212, if the electrostatic value of the backlight film material before assembly after power-up is larger than a preset value, performing step 213;
step 213, performing static elimination treatment on the electrified backlight film material until the electrified backlight film material meets the requirement of a preset value;
wherein, the requirement of the electrostatic preset value of the backlight film material comprises the following steps:
the brightness enhancement film is less than 3 KV;
the lower brightness enhancement film is less than 3 KV;
the diffusion film is less than 2 KV;
the light guide plate is less than 3 KV;
the reflective film is less than 3 KV.
6. The display module howling suppression method as claimed in claim 5, wherein the step 210 further comprises:
step 214, attaching and assembling the backlight film material meeting the requirement of the preset value;
step 215, performing static electricity detection on the assembled backlight structure finished product, and if the static electricity detection is smaller than a preset value, finishing static electricity elimination of the backlight film material.
7. The display module howling suppression method as claimed in claim 6, wherein the step 210 further comprises:
step 216, performing electrostatic detection on the assembled backlight structure finished product, and if the electrostatic detection is larger than a preset value, performing step 217;
step 217, performing static elimination treatment on the backlight structure finished product until the backlight structure finished product meets the requirement of a preset value;
the static preset value requirement of the backlight structure finished product is as follows:
the electrostatic value of the finished product of the backlight structure is less than 500V.
8. A method for assembling a display module by processing a backlight film using the howling suppression method according to any one of claims 1 to 7, comprising:
step 300, eliminating static electricity of each backlight film material by using a static electricity elimination processing method before assembly, so that each backlight film material meets the requirement of a preset value;
step 400, controlling the static value of each backlight film material by using a static elimination processing method in the assembling process;
500, assembling the backlight film materials meeting the requirement of a preset value together according to the backlight structure of the display module;
and step 600, controlling the static value of the backlight structure finished product by using a static elimination processing method after assembly.
9. The method of claim 8, wherein the step 400 comprises:
step 410, before assembly, detecting the electrostatic value of the backlight film material after power-on, and if the electrostatic value of the backlight film material is greater than a preset value, performing the next step;
step 420, performing static elimination processing on the backlight film material until the static value of the backlight film material after power-on meets the preset static value requirement of the backlight film material;
wherein, the requirement of the electrostatic preset value of the backlight film material comprises the following steps:
the upper brightness enhancement film is less than 3 KV;
the lower brightness enhancement film is less than 3 KV;
the diffusion film is less than 2 KV;
the light guide plate is less than 3 KV;
the reflective film is less than 3 KV.
10. The method as claimed in claim 9, wherein the step 500 comprises:
step 510, attaching and assembling the backlight film material meeting the requirement of a preset value;
step 520, performing static electricity detection and static electricity elimination treatment on the assembled backlight structure finished product until the preset static electricity value requirement of the backlight structure finished product is met;
the static preset value requirement of the backlight structure finished product is as follows:
the electrostatic value of the finished product of the backlight structure is less than 500V.
CN202210700102.9A 2022-06-20 2022-06-20 Display module howling suppression method and assembly method Pending CN114994970A (en)

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Publication number Priority date Publication date Assignee Title
JP2003005178A (en) * 2001-06-22 2003-01-08 Casio Comput Co Ltd Liquid crystal display module
JP2004184885A (en) * 2002-12-06 2004-07-02 Casio Comput Co Ltd Liquid crystal display module
US20100177263A1 (en) * 2009-01-15 2010-07-15 Satoshi Kuramoto Light source device and liquid crystal display apparatus including the same
CN102483536A (en) * 2009-08-25 2012-05-30 夏普株式会社 Liquid crystal display module
US20120140135A1 (en) * 2009-08-25 2012-06-07 Sharp Kabushiki Kaisha Liquid crystal display module

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