CN109041308B - Electric heating functional glass and display module assembly - Google Patents
Electric heating functional glass and display module assembly Download PDFInfo
- Publication number
- CN109041308B CN109041308B CN201811105312.3A CN201811105312A CN109041308B CN 109041308 B CN109041308 B CN 109041308B CN 201811105312 A CN201811105312 A CN 201811105312A CN 109041308 B CN109041308 B CN 109041308B
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- Prior art keywords
- electric heating
- glass
- heating units
- metal lead
- metal
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000011521 glass Substances 0.000 title claims abstract description 72
- 238000005485 electric heating Methods 0.000 title claims abstract description 71
- 229910052751 metal Inorganic materials 0.000 claims abstract description 81
- 239000002184 metal Substances 0.000 claims abstract description 81
- 230000007423 decrease Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000001788 irregular Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000006059 cover glass Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Surface Heating Bodies (AREA)
Abstract
The invention discloses electric heating functional glass and a display module thereof, wherein the electric heating functional glass comprises glass (1) and a transparent conductive layer (2) arranged on the glass (1), the transparent conductive layer (2) is divided into a plurality of electric heating units (2-1), and two opposite ends of the electric heating units (2-1) are respectively connected with a first metal lead (4) through a first metal block (3). The electric heating functional glass and the display module thereof provided by the invention can uniformly heat the glass, so that the display image quality is uniform and clear.
Description
Technical Field
The invention relates to the technical field of display equipment, in particular to electric heating functional glass and a display module.
Background
The LCD screen is light, thin and clear in image quality, and is applied to various industries instead of the traditional CRT television at present, the temperature range used by the LCD screen is generally-30-80 ℃, the humidity is within 90%, and beyond the range, the display screen can not normally display. Meanwhile, when the liquid crystal display screen is used in the occasions which are easy to be impacted, such as equipment and aircrafts, one or more cover glass plates are added on the surface of the liquid crystal glass for protection. Because the liquid crystal display screen has electromagnetic radiation, in the military application occasion, electromagnetic shielding is also required to be carried out on the front surface of the display screen.
Fig. 1 (a) is a front view of an electrically heated glass according to the prior art, in which a transparent metal layer 200 is formed on the surface of the glass 100, two electrodes 400 are formed outside the display area 300, the electrodes 400 are connected to metal leads 500, and an electric field is formed by applying a voltage or a current to both ends of the metal leads 500, so that the glass 100 is heated by converting the electricity into heat energy. There are two ways of electrically heating glass, as shown in fig. 1 (b), one is to sandwich a wire mesh 700 between two glass sheets 100, 600, as shown in fig. 1 (c), and the other is to plate a transparent metal layer 200 on the surface of the glass sheet 100. The metal wires are sandwiched between glass, and the metal wires are seen by naked eyes, so that the transmittance is low, and the transparent metal plating is increasingly used at present, and the transparent nano silver wires are also adopted. However, in either way, the whole heating area is an integral, when the voltage applied from the lead terminal to the lead terminal at different positions, the voltages at two ends are different, and the thickness of the whole metal layer or the plating layer cannot be completely uniform due to process limitation, so that the square resistances of different areas are greatly different (such as the area A and the area B in fig. 1 (a)), and the heating at different positions is uneven, thereby affecting the display quality of the display screen.
Disclosure of Invention
The invention aims to provide electric heating functional glass and a display module, which can accurately control the temperature of each area and realize uniform display.
Based on the above problems, one of the technical schemes provided by the invention is as follows:
The utility model provides an electrical heating function glass, includes glass and sets up transparent conducting layer on the glass, transparent conducting layer separates into a plurality of electrical heating unit, the relative both ends of electrical heating unit are connected first metal lead wire through first metal piece respectively.
In some embodiments, the electric heating units are in a strip shape, the electric heating units are arranged along the width direction of the glass, and the electric heating units are sequentially arranged along the length direction of the glass.
In some embodiments, the plurality of electric heating units are divided into two groups of electric heating units symmetrically arranged along the central line of the width direction of the glass, the width of each group of electric heating units gradually decreases from the outer edge of the glass to the middle part, one end of the first metal lead is connected to the first metal block, the other end of the first metal lead extends to the middle part of the outer edge of the width direction of the glass, and the resistance of each electric heating unit loop is equal.
In some of these embodiments, the first metal lead is connected to a positive electrode or a negative electrode.
In some embodiments, a transparent shielding unit is disposed between the electric heating units, and two ends of the transparent shielding unit are connected to a second metal lead through a second metal block, and the second metal lead is grounded.
Based on the above problems, the second technical scheme provided by the invention is as follows:
An electric heating functional glass comprises glass and a transparent conductive layer arranged on the glass, wherein the transparent conductive layer comprises a first transparent conductive layer and a second transparent conductive layer which are arranged from bottom to top, and a transparent insulating layer is arranged between the first transparent conductive layer and the second transparent conductive layer; the first transparent conductive layer is divided into a plurality of first electric heating units which are arranged along the first direction of the glass, two ends of each first electric heating unit are connected with a third metal lead through a third metal block, the second transparent conductive layer is divided into a plurality of second electric heating units which are arranged along the second direction of the glass, each second electric heating unit is connected with a fourth metal lead through a fourth metal block, and the second direction is mutually perpendicular to the first direction.
In some embodiments, the first electric heating unit and the second electric heating unit are both elongated, the first electric heating unit is arranged along the glass width direction, and the second electric heating unit is arranged along the glass length direction.
In some embodiments, the third metal lead extends to any position of a middle or non-display area of the glass width direction extension, and the fourth metal lead extends to any position of a middle or non-display area of the glass length direction extension.
In some embodiments, a first transparent shielding unit is arranged between the first electric heating units, two ends of the first transparent shielding unit are connected with a fifth metal lead wire through a fifth metal block, and the fifth metal lead wire is grounded; a second transparent shielding unit is arranged between the second electric heating units, two ends of the second transparent shielding unit are connected with a sixth metal lead through a sixth metal block, and the sixth metal lead is grounded.
The invention also provides the following technical scheme:
A display module having the electrically heated functional glass of any one of the above.
Compared with the prior art, the invention has the advantages that:
By adopting the technical scheme of the invention, the transparent conductive layer is divided into a plurality of electric heating units, and voltage or current can be independently applied. The sheet resistance and the driving voltage at different positions are consistent, the temperature of each area can be accurately controlled, and uniform display is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, in which the drawings are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 (a) is a schematic view of an electrically heated glass according to the prior art;
FIG. 1 (b) is a side view of an electrically heated glass of the prior art;
FIG. 1 (c) is a side view of another prior art electrically heated glass;
FIG. 2 is a schematic structural view of embodiment 1 of the electrically heated glass of the present invention;
FIG. 3 is a schematic structural diagram of embodiment 2 of the present invention;
FIG. 4 is a schematic structural diagram of embodiment 3 of the present invention;
FIG. 5 is a schematic structural diagram of embodiment 4 of the present invention;
FIG. 6 is a schematic view showing the structure of another embodiment 4;
fig. 7 is a schematic structural diagram of a first transparent conductive layer in embodiment 4 of the present invention;
FIG. 8 is a schematic diagram of the structure of a second transparent conductive layer in embodiment 4 of the present invention;
FIG. 9 is a schematic diagram of the structure of embodiment 5 of the present invention;
Wherein:
100. glass; 200. a transparent metal layer; 300. a display area; 400. an electrode; 500. a metal lead; 600. glass; 700. a wire mesh;
1. Glass; 1-1, a display area; 2. a transparent conductive layer; 2-1, an electric heating unit; 2-2, a first transparent conductive layer; 2-3, a second transparent conductive layer; 2-3, a transparent insulating layer; 3. a first metal block; 4. a first metal lead; 5. a positive electrode; 6. a negative electrode; 7. a transparent shielding unit; 8. a second metal block; 9. a second metal lead; 10. grounding; 11. a first electric heating unit; 12. a third metal block; 13. a third metal lead; 14. a second electric heating unit; 15. a fourth metal block; 16. a fourth metal lead; 17. a first transparent shielding unit; 18. a fifth metal block; 19. a fifth metal lead; 20. a second transparent shielding unit; 21. a sixth metal block; 22. and a sixth metal lead.
Detailed Description
The above-described aspects are further described below in conjunction with specific embodiments. It should be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. The implementation conditions used in the examples may be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are generally those in routine experiments.
Referring to fig. 2, for the structural schematic diagram of the present invention, there is provided an electric heating functional glass, which comprises glass and a transparent conductive layer 2 disposed on the glass 1, wherein the transparent conductive layer 2 is divided into a plurality of electric heating units 2-1, and two ends of the electric heating units 2-1 are respectively connected to a first metal lead 4 through a first metal block 3. In this example, the electric heating units 2-1 are rectangular and arranged along the width direction of the glass 1, the plurality of electric heating units 2-1 are sequentially arranged along the length direction of the glass 1 and are mutually parallel, and the first metal lead 4 extends to the middle of the extension of the width direction of the glass 1. In practice, the electric heating unit 2-1 is preferably in a long strip shape, may be a regular rectangle, may be a regular or irregular polygon, and the first metal lead 4 may extend to any position of the non-display area.
By applying a voltage V to the first metal lead 4 at both ends, a loop current I is formed before the first metal lead 4, the electrode, and the electric heating units 2-1, the resistances of the first metal lead 4 at both ends are represented by R1 and R3, respectively, the resistance of each electric heating unit 2-1 is represented by R2, and the total resistance r=r1+r2+r3, the heat generation Q of each electric heating unit 2-1 is proportional to the electric power w=v_i applied thereto, i.e., q=k_v_i or q=k_1_2. Each electric heating unit 2-1 can be driven individually, and can be driven with different voltages or different currents due to the different total resistances of each loop, provided that the electric power W of each electric heating unit is the same.
Referring to fig. 3, which is a schematic structural view of embodiment 2 of the present invention, in order to save costs and facilitate simultaneous control of the respective electric heating units 2-1, the difference from embodiment 1 is that the plurality of electric heating units 2-1 are divided into two groups of electric heating units 2-1 symmetrically arranged along the center line of the width direction of the glass 1, the width of each group of electric heating units 2-1 gradually decreases from the outer edge of the glass 1 to the middle, one end of the first metal lead 4 is connected to the first metal block 3 and the other end extends to the middle of the outer edge of the width direction of the glass 1, and if the widths of the first metal leads 4 are all the same, the widths of the electric heating units 2-1 corresponding to the corresponding resistors R1 L1＞R1L2＞…＞R1LN,R3L1＞R3L2＞…＞R3LN are from high to low according to the resistance law, and the corresponding resistors R2 L1＜R2L2＜…＜R2LN.
The total resistance of the loops of each electric heating unit 2-1 can be set to be the same, that is R1L1+R2L1+R3L1＝R1L2+R2L2+R3L2＝…＝R1LN+R2LN+R3LN. can be achieved by making each first metal lead 4 into one electrode, connecting the first metal leads 4 on both sides of the glass 1 in the width direction to the positive electrode 5 and the negative electrode 6 respectively, only the same voltage or current needs to be applied, a driving circuit does not need to be adopted, and cost is saved.
Referring to fig. 4, which is a schematic structural view of embodiment 3 of the present invention, in order to realize a shielding function, unlike embodiment 1, a transparent shielding unit 7 is provided between the electric heating units 2, and both ends of the transparent shielding unit 7 are connected to a second metal lead 9 via a second metal block 8, the second metal lead 9 being grounded 10.
Referring to fig. 5-8, for a schematic structural view of embodiment 4 of the invention, in order to be suitable for a large-sized display screen, the transparent conductive layer 2 includes a first transparent conductive layer 2-2 and a second transparent conductive layer 2-3 arranged from bottom to top, a transparent insulating layer 2-4 is disposed between the first transparent conductive layer 2-2 and the second transparent conductive layer 2-3, the first transparent conductive layer 2-2 is divided into a plurality of first electric heating units 11 arranged along a first direction of the glass 1, two ends of the first electric heating units 11 are connected to a third metal lead 13 through a third metal block 12, the second transparent conductive layer 2-3 is divided into a plurality of second electric heating units 14 arranged along a second direction of the glass 1, the second electric heating units 14 are connected to a fourth metal lead 16 through a fourth metal block 15, and the second direction is perpendicular to the first direction.
In this example, the first electric heating units 11 and the second electric heating units 14 are both in long strips, may be regular rectangles, or may be regular or irregular polygons, where the first electric heating units 11 are arranged along the width direction of the glass 1, and the plurality of first electric heating units 11 are sequentially arranged along the length direction of the glass 1 and are parallel to each other; the second electric heating units 14 are arranged along the length direction of the glass 1, and a plurality of the second electric heating units 14 are arranged in sequence along the width direction of the glass 1 and are mutually parallel. The third metal lead 13 extends to the middle of the width-direction extension of the glass 1, and the fourth metal lead 16 extends to any position of the middle or non-display region of the length-direction extension of the glass 1.
The structure can enable the two transparent conducting layers to be controlled independently, the large-size display screen is usually provided with a temperature imager, when the temperature imager monitors that the temperature of a certain block is particularly low, signal coordinates can be fed back to a corresponding channel of the control circuit, and the corresponding channel of the control circuit outputs voltage or current to heat the corresponding block. Such as the R4T3 block in the front view of fig. 5.
Referring to fig. 9, in a schematic structural view of embodiment 5 of the present invention, a first transparent shielding unit 17 is disposed between the first electric heating units 11, two ends of the first transparent shielding unit 17 are connected to a fifth metal lead 19 via a fifth metal block 18, and the fifth metal lead 19 is grounded; a second transparent shielding unit 20 is arranged between the second electric heating units 14, and two ends of the second transparent shielding unit 20 are connected with a sixth metal lead 22 through a sixth metal block 21, and the sixth metal lead 22 is grounded, so that the shielding effect is achieved.
The above examples are provided for illustrating the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the contents of the present invention and to implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (4)
1. An electrically heated functional glass comprising glass (1) and a transparent conductive layer (2) arranged on the glass (1), characterized in that: the transparent conductive layer (2) is divided into a plurality of electric heating units (2-1), and two opposite ends of the electric heating units (2-1) are respectively connected with a first metal lead (4) through a first metal block (3);
the electric heating units (2-1) are in a strip shape and are arranged along the width direction of the glass (1), and the plurality of electric heating units (2-1) are sequentially arranged along the length direction of the glass (1);
The electric heating units (2-1) are divided into two groups of electric heating units (2-1) symmetrically arranged along the central line of the width direction of the glass (1), the width of each group of electric heating units (2-1) gradually decreases from the outer edge of the glass (1) to the middle part, one end of a first metal lead (4) is connected to a first metal block (3) and the other end of the first metal lead extends to the middle part of the outer edge of the width direction of the glass (1), and the resistance of each electric heating unit (2-1) circuit is equal.
2. The electrically heated functional glass of claim 1, wherein: the first metal lead (4) is connected to a positive electrode (5) or a negative electrode (6).
3. The electrically heated functional glass of claim 1, wherein: a transparent shielding unit (7) is arranged between the electric heating units (2-1), two ends of the transparent shielding unit (7) are connected to a second metal lead (9) through a second metal block (8), and the second metal lead (9) is grounded (10).
4. A display module assembly, its characterized in that: an electrically heated functional glass as claimed in any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811105312.3A CN109041308B (en) | 2018-09-21 | 2018-09-21 | Electric heating functional glass and display module assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811105312.3A CN109041308B (en) | 2018-09-21 | 2018-09-21 | Electric heating functional glass and display module assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109041308A CN109041308A (en) | 2018-12-18 |
| CN109041308B true CN109041308B (en) | 2024-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811105312.3A Active CN109041308B (en) | 2018-09-21 | 2018-09-21 | Electric heating functional glass and display module assembly |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112198688A (en) * | 2019-07-08 | 2021-01-08 | 群创光电股份有限公司 | Liquid crystal device having a plurality of liquid crystal cells |
| CN111694181B (en) * | 2020-07-07 | 2022-06-21 | 中航华东光电有限公司 | Method for uniformly heating liquid crystal screen assembly at low temperature |
| CN112346269B (en) * | 2020-11-10 | 2022-10-11 | 厦门天马微电子有限公司 | Display panel, heating driving method thereof and display device |
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| CN209184841U (en) * | 2018-09-21 | 2019-07-30 | 苏州本瑞光电科技有限公司 | A kind of electric heating function glass and display module |
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