TWI847854B - Liquid crystal display device - Google Patents

Abstract

A liquid crystal display device, comprising a liquid crystal display unit, a circuit board, electronic components, a first connection flexible board, and a fixing unit. One end of the first connection flexible board is connected to the backlight component, and the other end is connected to the electronic components. The fixing unit is set on the circuit board, and the fixing unit includes a first support member, a second support member, and a connecting member. The first support member is fixed on the first side of the circuit board; the backlight component is set on the first support member; the second support member is set up with a display panel; one side of the connecting member is connected to the side of the first support member, and the other side of the connecting member is connected to the side of the second support member. The second support member, the connecting member, and the first side form a housing cavity, and the electronic components are set on the first side of the housing cavity, and the first connection flexible board is connected to the electronic components along a designated path.

Description

LCD display device

A display device and its supporting structure, in particular a liquid crystal display device.

With the rapid development of liquid crystal display (LCD) technology, display devices have become thinner and lighter with a wider viewing range. In order to provide backlight source, light-emitting diodes (LED) have begun to be used in LCD displays. Whether it is edge lit or direct lit, a circuit board is set behind the LCD panel to control the switch and brightness of the backlight source.

In order to avoid mutual interference between the electronic components and the backlight source of the LCD display device, the current practice is to configure them on two different circuit boards, distributed on both sides of the panel. As the stacking thickness of the backlight source, electronic components and circuit boards increases, the overall thickness of the display device increases. Although placing the circuit board in the frame of the LCD can reduce the thickness, it will also increase the area of the frame. This will affect the user's perception of the visible area. In addition, placing the circuit board in the frame requires longer cables, which will also affect the volume of the LCD.

In view of this, in one embodiment, the liquid crystal display device provides a housing structure for related circuits, so that the liquid crystal display device can achieve the goal of narrow borders and thinner thickness.

In some embodiments, a liquid crystal display device includes a liquid crystal display unit, a circuit board, an electronic component, and a fixing unit. The liquid crystal display unit has a display panel and a backlight element; the circuit board has a first side surface; the fixing unit is arranged on the circuit board, and the fixing unit has a first supporting member, a second supporting member and a connecting member; the display panel is arranged on the first supporting member; the second supporting member is arranged on the first side surface, the backlight element is arranged on the second supporting member, and the second supporting member is provided with a first opening; the side of the connecting member is connected to the side of the first supporting member along a first direction, and the other side of the connecting member is connected to the side of the second supporting member along a second direction, the first direction is different from the second direction, and a containing cavity is formed between the first supporting member, the connecting member and the first side surface, and the electronic component is arranged on the first side surface in the containing cavity. The liquid crystal display device sets the electronic components in the housing cavity of the fixed unit, so the overall thickness of the liquid crystal display device can be effectively reduced. In addition, in addition to accommodating the electronic components in the housing cavity, the display panel and the backlight component can be configured on other sides of the fixed unit. Therefore, the width of the screen frame is adjusted by the configuration position of the display panel and the width of the first support member.

In one embodiment, it further includes a first connecting flexible board, one end of which is connected to the backlight element, and the other end of which is connected to the electronic element, and the first connecting flexible board is disposed between the backlight element and the second supporting member.

In one embodiment, it further includes a designated path, wherein the designated path is a first connecting flexible board passing through the first opening and connecting to the electronic component along the second supporting member and the first side.

In one embodiment, the fixing unit further includes a third supporting member, the other side of the first supporting member is connected to the side of the third supporting member, and a receiving cavity is formed between the connecting member, the first supporting member, the third supporting member and the first side surface.

In one embodiment, it further includes a designated path, wherein the designated path is the first connecting flexible board connected to the electronic component along the connecting member, the first supporting member and the third supporting member.

In one embodiment, the accommodation width of the accommodation cavity is greater than or equal to the component width of the electronic component.

In one embodiment, a second connecting flexible board is further included, one end of the second connecting flexible board is connected to the display panel, and the other end is electrically connected to the circuit board.

The liquid crystal display device can arrange the electronic components and the backlight components on the same side of the circuit board. In addition, the fixing unit can form a receiving cavity at the frame, so that the electronic components can be arranged in the receiving cavity. Therefore, the overall thickness of the liquid crystal display can be reduced, and the purpose of narrowing the frame can also be achieved.

100: Liquid crystal display device

110: Liquid crystal display unit

111: Display panel

112: Backlight element

120: Circuit board

121: First side

122: Second side

123:Connection port

130: Electronic components

141: First connection soft board

142: Second connection soft board

150: Fixed unit

151: The first support

152: Second support member

153: Connectors

154: The third support member

155: First opening

156: Second opening

160: accommodating cavity

170: Support element

180: Insulation layer

Figure 1 is a schematic diagram of the component structure of a liquid crystal display device of an embodiment.

Figure 2 is a three-dimensional schematic diagram of a liquid crystal display device of an embodiment.

FIG3 is a side view of a liquid crystal display device of an embodiment.

Figure 4 is a schematic diagram of a housing cavity and electronic components in an embodiment.

Figure 5 is another connection diagram of the first connection flexible board of an embodiment.

Figure 6 is a schematic diagram of the component structure of another liquid crystal display device of an embodiment.

FIG7 is a side view of another liquid crystal display device of an embodiment.

Figure 8 is a side view of the first opening of an embodiment.

Figure 9 is a side view of the third support member of an embodiment.

Figure 10 is a side view of the second opening of an embodiment.

Figure 11 is a side view of another third support member of an embodiment.

Figure 12 is a schematic diagram of a support element of an embodiment.

Figure 13 is a schematic diagram of a housing cavity and an insulating layer of an embodiment.

Please refer to FIG. 1, FIG. 2, and FIG. 3, which are schematic diagrams, three-dimensional diagrams, and side views of the component structure of a liquid crystal display device 100 of an embodiment. The liquid crystal display device 100 has a liquid crystal display unit 110, a circuit board 120, an electronic component 130, and a fixed unit 150. In FIG. 1, the components connected by signals are indicated by dashed lines, and the components connected by physical connections (e.g., wiring or cable connections) are indicated by solid lines. In addition, different components in the side view of FIG. 3 are separated by different filled line segments. And according to FIG. 3, the "width" below is the width of the component on the X axis, and the "height" below is the height of the component on the Y axis; and according to FIG. 2, the "length" below is the length of the component on the Z axis.

The liquid crystal display unit 110 has a display panel 111 and a backlight element 112. The circuit board 120 has a first side surface 121 and a second side surface 122, and the first side surface 121 and the second side surface 122 are opposite sides, as shown in FIG3. The electronic component 130, the fixing unit 150 and the liquid crystal display unit 110 are arranged on the first side surface 121 of the circuit board 120. For the convenience of explanation, the electronic component 130 in FIG2 and FIG3 is shown as a block. In fact, the electronic component 130 can be a chip, a resistor, a capacitor, an inductor or a combination thereof.

The fixing unit 150 has a first support member 151, a second support member 152 and a connecting member 153. The two opposite sides of the connecting member 153 are connected to the first support member 151 and the second support member 152 respectively, please refer to FIG2. Further, one side of the connecting member 153 is connected to the side of the first support member 151 along the first direction (no label). The other opposite side of the connecting member 153 is connected to the side of the second support member 152 along the second direction. The second direction is the normal of the side of the connecting member 153; the first direction (no label) is the normal of the other side of the connecting member 153, and the first direction is different from the second direction. In FIG2 and FIG3, the angle between the second direction and the first direction is 180 degrees. In other implementations, the angle between the first direction and the second direction can be any value other than "0" degrees.

The second supporting member 152 is disposed on the first side surface 121. One side surface of the second supporting member 152 can be fixed to the first side surface 121 by bonding, welding or locking. The backlight element 112 can be disposed on the other side surface of the second supporting member 152, as shown in FIG3. The space between the first supporting member 151, the connecting member 153 and the first side surface 121 is called the accommodating cavity 160, as shown in FIG4. In FIG4, the accommodating cavity 160 is represented by a dotted line frame. The electronic component 130 is disposed in the accommodating cavity 160, and the electronic component 130 is located on the first side surface 121. The first supporting member 151 can be provided with a display panel 111. The display panel 111 can be fixed to the first support member 151 by bonding, magnetism or clamping. In FIG4 , the horizontal axis of the accommodating cavity 160 is represented as width, and the vertical axis is represented as height. The width of the accommodating cavity 160 is greater than or equal to the width of the electronic component 130, and the height of the accommodating cavity 160 is greater than or equal to the height of the electronic component 130. The accommodating space of the accommodating cavity 160 is greater than the volume of the electronic component 130, and is used to accommodate the electronic component 130.

In some embodiments, the liquid crystal display device 100 further includes a first connection soft board 141. In FIG. 3, the display panel 111 is fixed to the first support member 151 by bonding. The first connection soft board 141 can be disposed between the display panel 111 and the first support member 151. In FIG. 3 and FIG. 4, the display panel 111 and the first support member 151 can be distinguished, so the first connection soft board 141 is drawn between the display panel 111 and the first support member 151. In some embodiments, a groove can be provided on the surface of the first support member 151, and the first connection soft board 141 can be disposed in the groove, so as to reduce the thickness of the liquid crystal display device 100.

One end of the first connection flexible board 141 is electrically connected to the backlight element 112, and the other end is electrically connected to the electronic element 130. In FIG. 3 and FIG. 4, the first connection flexible board 141 is connected to the electronic element 130 along a designated path (no number) between the fixing unit 150 and the first side surface 121. The designated path is determined according to the connection method between the fixing unit 150 and the first side surface 121. In this embodiment, the designated path is along the surface of the first support member 151, the surface of the connecting member 153, the surface of the second support member 152, the first side surface 121 to the electronic element 130, please refer to FIG. 3. In different embodiments, the designated path may be from the backlight element 112, the connector 153, the second support member 152 to the first side surface 121, as shown in FIG5.

In some embodiments, the liquid crystal display device 100 further includes a second connection flexible board 142, see FIG6 and FIG7. One end of the second connection flexible board 142 is electrically connected to the display panel 111, and the other end is electrically connected to the circuit board 120. The circuit board 120 further includes a connection terminal 123. The connection terminal 123 can be selectively disposed on the first side 121 or the second side 122. In FIG7, the second connection flexible board 142 is electrically connected to the connection terminal 123 on the second side 122. Alternatively, the connection terminal 123 can also be disposed around the electronic component 130 (i.e., located on the first side 121).

In some embodiments, the fixing unit 150 further includes a first opening 155. The first opening 155 is provided in the surface of the second supporting member 152, see FIG8. The first opening 155 is indicated by a thick black dashed line frame. One end of the first connecting flexible board 141 is electrically connected to the backlight element 112, and the other end can pass through the first opening 155 to connect to the electronic element 130. In other words, the designated path is from the second supporting member 152 and the first side surface 121 to the electronic element 130.

In some embodiments, the fixing unit 150 further includes a third support member 154, see FIG9 . One end of the first support member 151 is connected to the connector 153, and the other end is connected to the side of the third support member 154. The connector 153, the first support member 151, the third support member 154 and the first side surface 121 form a receiving cavity 160. Generally speaking, the direction of the third support member 154 and the direction of the connector 153 can be parallel to each other. The height of the third support member 154 can be less than or equal to the height of the connector 153. In FIG9 , the height of the third support member 154 is slightly less than the height of the connector 153. Therefore, the first connection soft board 141 can bypass the other side of the third support member 154 and connect to the electronic component 130. In this embodiment, the designated path is that the first connecting flexible board 141 is connected to the electronic component 130 along the connecting member 153, the first supporting member 151 and the third supporting member 154.

In some embodiments, the fixing unit 150 further includes a second opening 156. The second opening 156 is provided in the surface of the connecting member 153, see FIG10. The second opening 156 is indicated by a thick black dashed line frame. One end of the first connecting flexible board 141 is electrically connected to the backlight element 112, and the other end can pass through the second opening 156 to connect to the electronic element 130. In other words, the designated path is from the second supporting member 152 and the first side surface 121 to the electronic element 130. In this embodiment, the height of the third supporting member 154 can be equal to the height of the connecting member 153, see FIG11. The other side of the third supporting member 154 abuts against the first side surface 121.

In some embodiments, the liquid crystal display device 100 further includes a supporting element 170, see FIG12. The supporting element 170 is disposed in the accommodating cavity 160. One end of the supporting element 170 abuts against the bottom side of the first supporting member 151, and the other end can abut against the upper side of the electronic component 130 or the first side 121. In FIG12, the two ends of the supporting element 170 abut against the bottom side of the first supporting member 151 and the electronic component 130, respectively. The supporting element 170 can be a material with supporting ability such as sponge, double-sided tape, rubber or metal. The supporting element 170 can fix the position of the first supporting member 151 to prevent the electronic component 130 in the accommodating cavity 160 from being squeezed by external force.

In some embodiments, the liquid crystal display device 100 further includes an insulating layer 180, see FIG. 13. The insulating layer 180 is disposed on one side of the accommodating cavity 160. The insulating layer 180 is disposed along the connecting member 153, the first supporting member 151, and the third supporting member 154. The insulating layer 180 is used to isolate the contact between the fixing unit 150 and the electronic element 130, so as to protect the electronic element 130 from being squeezed by static electricity or other external forces.

The liquid crystal display device 100 can arrange the electronic component 130 and the backlight component 112 on the same side of the circuit board 120. In addition, the fixing unit 150 can form a receiving cavity 160 at the frame, so that the electronic component 130 can be arranged in the receiving cavity 160. Therefore, the overall thickness of the liquid crystal display can be reduced, and the purpose of narrowing the frame can also be achieved. Moreover, the electronic component 130 is accommodated in the receiving cavity 160, which can also ensure that the electronic component 130 will not be directly affected by external forces and damaged.

100: Liquid crystal display device

111: Display panel

112: Backlight element

120: Circuit board

121: First side

122: Second side

130: Electronic components

141: First connection soft board

151: The first support

152: Second support member

153: Connectors

160: accommodating cavity

Claims (9)

A liquid crystal display device comprises: a liquid crystal display unit having a display panel and a backlight element; a circuit board having a first side surface; an electronic element; and a fixing unit disposed on the circuit board, the fixing unit having: a first supporting member, the display panel being disposed on the first supporting member; a second supporting member disposed on the first side surface, the backlight element being disposed on the second supporting member, the second supporting member being provided with a first opening; and A connecting member, a side of the connecting member is connected to a side of the first supporting member along a first direction, and another side of the connecting member is connected to a side of the second supporting member along a second direction, the first direction is different from the second direction, a receiving cavity is formed between the first supporting member, the connecting member and the first side surface, and the electronic component is arranged on the first side surface in the receiving cavity. The liquid crystal display device as described in claim 1 further includes a first connecting flexible board, one end of which is connected to the backlight element and the other end is connected to the electronic element, and the first connecting flexible board is arranged between the backlight element and the second supporting member. The liquid crystal display device as described in claim 2 further includes a designated path, wherein the first connecting flexible board passes through the first opening and is connected to the electronic component along the second supporting member and the first side. A liquid crystal display device as described in claim 2, wherein the fixing unit further includes a third supporting member, the other side of the first supporting member is connected to the side of the third supporting member, and the accommodating cavity is formed between the connecting member, the first supporting member, the third supporting member and the first side surface. The liquid crystal display device as described in claim 4 further includes a designated path, wherein the first connecting flexible board is connected to the electronic component along the connecting member, the first supporting member and the third supporting member. The liquid crystal display device as described in claim 4 further includes a supporting element, which is disposed in the accommodating cavity, one end of the supporting element abuts against the first supporting member, and the other end of the supporting element abuts against the first side surface or the electronic component. A liquid crystal display device as described in claim 4, wherein the connector has a second opening, and a designated path is for the first connecting flexible board to pass through the second opening and connect to the electronic component along the first side. The liquid crystal display device as described in claim 1 further includes a second connecting flexible board, one end of which is connected to the display panel, and the other end of which is electrically connected to the circuit board. A liquid crystal display device as described in claim 1 or 8, wherein the circuit board includes a second side, the first side and the second side are opposite sides, and a connecting end is arranged on the first side or the second side.

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