COG pre-pressing machine for liquid crystal display

Abstract

The utility model belongs to the technical field of display processing, and particularly relates to a COG (Chip On Glass) prepress for a liquid crystal display, which comprises a frame body, a support frame is arranged on the table top of the frame body, a press-fitting driving part is arranged on the side wall of the frame body, the press-fitting driving part drives a press-fitting head to face the support frame, a cavity is arranged in the press-fitting head, and the press-fitting head is arranged in the cavity. An electric heating plate used for heating is installed on the top wall of the cavity, an air pump is installed in the cavity, an air opening of an air outlet frame of the air pump faces the hot air openings, the two sides of the cavity are communicated with the hot air openings respectively, the hot air openings extend to the bottom of the press-fitting head, and a pre-pressing roller is arranged on the portion, between the two hot air openings, of the bottom face of the press-fitting head. According to the display screen prepressing device, the prepressing quality can be improved under the condition that the environment temperature is low, the flowability of glue in the display screen prepressing process can be improved, the flowability in the air prepressing process can be improved, and bubbles can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of display processing, in particular to a COG pre-pressing machine for a liquid crystal display. Background Art

[0002] The pre-pressing machine is used to align the IC chip and the LCD screen, and then pre-press them into one. The IC chip integrates a large number of microelectronic components on a silicon substrate to make a chip. The LCD display is a display that uses liquid crystal to control transmittance technology to achieve color.

[0003] The existing patent (publication number is CN215416182U) and a semi-automatic COG pre-pressing machine for liquid crystal display screens. This patent places the IC chip and the liquid crystal display screen directly on the support plates set on the side away from each other on the turntables on both sides after aligning them. Then the motor can drive the shaft to rotate, drive the turntable to rotate, and then the support plates on the side away from each other can be rotated 180° to the side close to each other. Then the hydraulic rod can be used to control the connection frame and the pre-pressing plate to move down, and the IC chip and the liquid crystal display screen on the side close to each other can be pre-pressed. Since the liquid crystal display screen is glued before pre-pressing, the display screen and the IC chip are tightly combined during the pre-pressing process. During the pre-pressing process, the liquid crystal display screen and the IC chip are both at room temperature. If the ambient temperature is low in winter, the colloid fluidity is poor, and the air flow rate is relatively slow. This will cause the liquid crystal display screen to have insufficient expansion area during pre-pressing, resulting in insufficient viscosity, and bubbles due to excessive air flow.

[0004] Therefore, we propose a COG pre-pressing machine for liquid crystal displays, which is beneficial to improving the pre-pressing quality under low ambient temperature, improving the fluidity of the colloid during the pre-pressing process of the display screen, and improving the fluidity of the air during the pre-pressing process to reduce the occurrence of bubbles. Utility Model Content

[0005] In order to overcome the above defects of the prior art, the utility model provides a COG pre-pressing machine for a liquid crystal display to solve the problems existing in the above background technology.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: 1. A COG pre-pressing machine for a liquid crystal display, comprising a frame, a support frame is installed on the frame table, a press-fitting drive component is installed on the side wall of the frame, the press-fitting drive component drives a press-fitting head to face the support frame, a cavity is opened inside the press-fitting head, an electric heating plate for heating is installed on the top wall of the cavity, an air pump is installed inside the cavity, the air outlet of the air outlet frame of the air pump faces the hot air outlet, hot air outlets are respectively connected to both sides of the cavity, and the hot air outlets extend to the bottom of the press-fitting head, and a pre-pressing roller is arranged on the bottom surface of the press-fitting head between the two groups of hot air outlets.

[0007] Furthermore: two groups of through cavities are opened in the cavity, the through cavities extend toward the pre-pressing roller, and the through cavities are filled with fins.

[0008] Furthermore: the signal output end of the electric heating plate is connected to the signal output end of the air pump, the electric heating plate and the air pump are started synchronously, and the power of the electric heating plate is proportional to the power of the air pump.

[0009] Furthermore: the top surface of the support frame supports a liquid crystal display screen, and the side wall of the frame is installed with an auxiliary pressing component for stabilizing the liquid crystal display screen.

[0010] Furthermore: the auxiliary press-fitting assembly includes a driving structure and an adsorption structure, the driving structure is used to drive the adsorption structure to move up and down, and the adsorption structure is used to adsorb and fix the liquid crystal display screen.

[0011] Furthermore: the press-fitting driving component drives the press-fitting head to move horizontally or vertically on the liquid crystal display screen.

[0012] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0013] 1) The COG pre-pressing machine for liquid crystal display of the utility model is provided with a pressing head, a cavity, an electric heating plate, an air pump and a hot air outlet. When the ambient temperature is low, the electric heating plate in the cavity is started to heat, and the air pump is started to discharge the hot air from the hot air outlet. Then, when the pressing head is close to the liquid crystal display, the temperature of the area to be pre-pressed is increased, so that the air temperature in the pre-pressing area is increased and the flow rate is faster. At the same time, the fluidity of the colloid in the pre-pressing area is increased due to the increase in temperature, which is beneficial to improving the pre-pressing quality under low ambient temperature conditions, improving the fluidity of the colloid during the pre-pressing process of the display screen, and improving the fluidity of the air during the pre-pressing process to reduce the occurrence of bubbles.

[0014] 2) The COG pre-pressing machine for liquid crystal display of the utility model, through the setting of fins and pre-pressing rollers, the hot air in the cavity contacts with the fins and the pre-pressing roller, and then the temperature of the pre-pressing roller is also increased, and the hydraulic display is pre-pressed by the pre-pressing roller. After the pre-pressing roller contacts the display screen, the air flow rate under the display screen is faster, and it is easy to be discharged during pre-pressing, thereby reducing the probability of bubble generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the COG pre-pressing machine for liquid crystal display of the utility model;

[0016] Figure 2 It is a schematic cross-sectional view of the structure of the pressing head of the COG pre-pressing machine for liquid crystal display of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the auxiliary pressing assembly of the COG pre-pressing machine for liquid crystal display of the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the air pump structure of the COG pre-pressing machine for liquid crystal display.

[0019] The accompanying drawings are marked as follows: 1. frame; 2. support frame; 3. press-fitting head; 31. cavity; 32. electric heating plate; 33. air pump; 34. air outlet frame; 35. fins; 36. pre-pressing roller; 37. hot air outlet; 4. press-fitting drive component; 5. auxiliary press-fitting assembly; 51. drive structure; 52. adsorption structure. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative, and the structures involved in the present invention are not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0021] Example:

[0022] See also Figure 1-4The utility model provides a technical solution: a COG pre-pressing machine for a liquid crystal display, comprising a frame 1, a support frame 2 is installed on the table of the frame 1, and the liquid crystal display screen is supported by the support frame 2, a press-fitting driving component 4 is installed on the side wall of the frame 1, and the press-fitting driving component 4 drives a press-fitting head 3 to move horizontally or vertically on the liquid crystal display screen, and drives the press-fitting driving component 4 to move horizontally as a whole through a horizontal electric drive slide rail, and then pushes the press-fitting head 3 to move vertically through an electric push rod component, and the press-fitting driving component 4 drives the press-fitting head 3 to face the support frame 2, and a cavity 31 is opened inside the press-fitting head 3, and an electric heating plate 32 for heating is installed on the top wall of the cavity 31, and an air pump 33 is installed inside the cavity 31, and the air outlet of the air outlet frame 34 of the air pump 33 faces Facing the hot air outlet 37, the two sides of the cavity 31 are connected with hot air outlets 37 respectively, and the hot air outlets 37 extend to the bottom of the pressing head 3. The bottom surface of the pressing head 3 is provided with a pre-pressing roller 36 between the two groups of hot air outlets 37. When the ambient temperature is low, the electric heating plate 32 in the cavity 31 is started for heating, and the air pump 33 is started to discharge the hot air from the hot air outlet 37. Then, when the pressing head 3 is close to the liquid crystal display, the temperature of the area to be pre-pressed is increased, so that the air temperature in the pre-pressing area is increased and the flow rate is faster. At the same time, the colloid in the pre-pressing area is affected by the temperature increase and the fluidity is increased. When the ambient temperature is low, the pre-pressing quality is improved, the fluidity of the colloid during the pre-pressing process of the display screen is improved, the fluidity of the air during the pre-pressing process is improved, and the occurrence of bubbles is reduced.

[0023] Among them, two groups of through cavities are opened in the cavity 31, and the through cavities extend to the pre-pressing roller 36. The through cavities are filled with fins 35. The hot air in the cavity 31 contacts the pre-pressing roller 36 through the fins 35, and then the temperature of the pre-pressing roller 36 also increases. The hydraulic display is pre-pressed by the pre-pressing roller 36. After the pre-pressing roller 36 contacts the display screen, the air flow rate under the display screen is faster, and it is easy to be discharged during pre-pressing, thereby reducing the probability of bubble generation.

[0024] Among them, the signal output end of the electric heating plate 32 is connected to the signal output end of the air pump 33, and the electric heating plate 32 and the air pump 33 are started synchronously. The power of the electric heating plate 32 is proportional to the power of the air pump 33. In order to avoid the situation where the temperature inside the cavity 31 is too high, while the power of the electric heating plate 32 is increased, the power of the air pump 33 also needs to be increased to quickly deliver the heat.

[0025] Among them, the top surface of the support frame 2 supports a liquid crystal display screen, and the side wall of the frame body 1 is installed with an auxiliary pressing component 5 for stabilizing the liquid crystal display screen. The auxiliary pressing component 5 includes a driving structure 51 and an adsorption structure 52. The driving structure 51 is used to drive the adsorption structure 52 to move up and down, and the adsorption structure 52 is used to adsorb and fix the liquid crystal display screen. The driving structure 51 can adopt an electric push rod. Starting the driving structure 51 makes the adsorption structure 52 fit on the liquid crystal display screen, and the adsorption structure 52 is used to auxiliary fix the display screen.

[0026] The working principle of the embodiment of the utility model is as follows: the driving structure 51 is started to make the adsorption structure 52 fit on the liquid crystal display screen, the adsorption structure 52 is used to auxiliary fix the display screen, the support frame 2 is used to support the liquid crystal display screen, the horizontal electric drive slide rail is used to drive the overall horizontal movement of the press-fitting drive component 4, and then the electric push rod component is used to push the press-fitting head 3 to move vertically. When the ambient temperature is low, the electric heating plate 32 in the cavity 31 is started for heating, and the air pump 33 is started to discharge the hot air from the hot air outlet 37, so that when the press-fitting head 3 is close to the liquid crystal display, the temperature of the area to be pre-pressed is increased, so that the air temperature in the pre-pressing area is increased and the flow rate is faster. At the same time, the colloid in the pre-pressing area is affected by the temperature increase and the fluidity is increased. At the same time, the hot air in the cavity 31 contacts the pre-pressing roller 36 through the fins 35, and the temperature of the pre-pressing roller 36 is also increased. The hydraulic display is pre-pressed by the pre-pressing roller 36. After the pre-pressing roller 36 contacts the display screen, the air flow rate under the display screen is faster, and it is easy to be discharged during pre-pressing, thereby reducing the probability of bubble generation.

[0027] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A COG pre-pressing machine for a liquid crystal display, comprising a frame (1), a support frame (2) being mounted on a table top of the frame (1), a press-fitting driving component (4) being mounted on a side wall of the frame (1), the press-fitting driving component (4) driving a press-fitting head (3) to face the support frame (2), characterized in that: A cavity (31) is provided inside the pressing head (3), a heating plate (32) for heating is installed on the top wall of the cavity (31), an air pump (33) is installed inside the cavity (31), an air outlet of an air outlet frame (34) of the air pump (33) faces the hot air outlet (37), both sides of the cavity (31) are connected to the hot air outlet (37), and the hot air outlet (37) extends to the bottom of the pressing head (3), and a pre-pressing roller (36) is provided on the bottom surface of the pressing head (3) between the two groups of hot air outlets (37).

2. A COG pre-pressing machine for a liquid crystal display according to claim 1, characterized in that: Two groups of through cavities are provided in the cavity (31), the through cavities extend towards the pre-pressing roller (36), and the through cavities are filled with fins (35).

3. The COG pre-pressing machine for a liquid crystal display according to claim 1, characterized in that: The signal output end of the electric heating plate (32) is connected to the signal output end of the air pump (33); the electric heating plate (32) and the air pump (33) are started synchronously; the power of the electric heating plate (32) is proportional to the power of the air pump (33).

4. The COG pre-pressing machine for a liquid crystal display according to claim 1, characterized in that: The top surface of the support frame (2) supports a liquid crystal display screen, and the side wall of the frame body (1) is installed with an auxiliary pressing assembly (5) for stabilizing the liquid crystal display screen.

5. A COG pre-pressing machine for a liquid crystal display according to claim 4, characterized in that: The auxiliary press-fitting assembly (5) comprises a driving structure (51) and an adsorption structure (52); the driving structure (51) is used to drive the adsorption structure (52) to move up and down; and the adsorption structure (52) is used to adsorb and fix the liquid crystal display screen.

6. A COG pre-pressing machine for a liquid crystal display according to claim 4, characterized in that: The press-fitting drive component (4) drives the press-fitting head (3) to move horizontally or vertically on the liquid crystal display screen.

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