CN102902109A - Flexible display panel - Google Patents
Flexible display panel Download PDFInfo
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- CN102902109A CN102902109A CN 201210421935 CN201210421935A CN102902109A CN 102902109 A CN102902109 A CN 102902109A CN 201210421935 CN201210421935 CN 201210421935 CN 201210421935 A CN201210421935 A CN 201210421935A CN 102902109 A CN102902109 A CN 102902109A
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- frame glue
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- base plate
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Abstract
The invention provides a flexible display panel, which comprises a first flexible substrate, a second flexible substrate and a frame sealant, wherein the second flexible substrate is arranged opposite to the first flexible substrate; the frame sealant is positioned between the first flexible substrate and the second flexible substrate for adhering the first flexible substrate and the second flexible substrate and is made of an elastic material; the flexible display panel has a curvature radius; and the young modulus numerical value of the frame sealant corresponds to the size of the curvature radius. By using the flexible display panel, the frame sealant of the elastic material is arranged between the two substrates; and when a flexible element in the flexible display panel bends, stress between the frame sealant and the substrates can be buffered by the elastic frame sealant material, and the structural stability of the flexible element can be improved.
Description
Technical field
The present invention relates to a kind of display panel, relate in particular to a kind of flexible display panel.
Background technology
Along with advancing by leaps and bounds of display technique, display little by little develops into present flat-panel screens (Flat Panel Display, FPD) from early stage cathode-ray tube (CRT) (Cathode Ray Tube, CRT) display.Compared to the hard support plate (for example, glass substrate) flat-panel screens that consists of, because flexible base plate (for example, plastic substrate) has deflection and the characteristic such as shock-resistant, so set about in recent years studying active member has been made in flexible display on the flexible base plate.
In the prior art, traditional flexible display can be coated with first frame glue, then pressing active device substrate and subtend substrate between active device substrate and subtend substrate when making, and display medium injected between active device substrate and the subtend substrate, seal again afterwards.For example, frame glue is generally thermoset resin or UV cured glue, and it can sclerosis after pressing is carried out in two substrates (active device substrate and subtend substrate) heating, pressurization.Then, when flexible display was crooked, the frame glue of sclerosis tended to crooked difficulty, even in BENDING PROCESS, the frame glue of sclerosis produces damage because being subject to excessive stress, caused substrate fracture or active member damaged, thereby had influence on the reliability of product.
In view of this, how designing a kind of improved flexible display panel, to solve after the sclerosis of above-mentioned frame glue often crooked hard problem, is a problem needing to be resolved hurrily of person skilled in the industry.
Summary of the invention
For the existing defects of flexible display panel of the prior art, the invention provides a kind of flexible display panel of novelty.
According to one aspect of the present invention, a kind of flexible display panel is provided, comprising:
One first flexible base plate;
One second flexible base plate is oppositely arranged with described the first flexible base plate; And
One frame glue, between described the first flexible base plate and described the second flexible base plate, in order to bonding the described first bendable substrate and the described second bendable substrate,
Wherein, described frame glue is made by a resilient material, and described flexible display panel has a radius-of-curvature, and the numerical value of the Young modulus of described frame glue (Young ' s modulus) and described radius-of-curvature is big or small corresponding.
Preferably, the pass of the Young modulus of the radius-of-curvature of this flexible display panel and described frame glue is:
When radius-of-curvature during greater than 100mm and less than 200mm, the Young modulus of described frame glue is between between the 2000MPa to 3000MPa;
When radius-of-curvature during greater than 50mm and less than 100mm, the Young modulus of described frame glue is between between the 1000MPa to 2000MPa; And
When radius-of-curvature during less than 50mm, the Young modulus of described frame glue is less than 1000MPa.
Preferably, the first flexible base plate and the second flexible base plate are made by plastic material.
Preferably, the material of frame glue is polymethylmethacrylate (acrylic) or epoxy resin (epoxy).
Preferably, the bearing of trend of described frame glue and described the first flexible base plate are perpendicular, consist of an enclosure space by described frame glue, the first flexible base plate and the second flexible base plate, with an accommodating display medium.More preferably, this display medium comprises liquid crystal, electrophoresis showed layer or organic electroluminescent device layer.
Adopt flexible display panel of the present invention, one frame glue is set between the first flexible base plate and the second flexible base plate, and this frame glue adopts resilient material to make, when bending appears in the flexible element in the flexible display panel, by the stress between this resilient bezel glue material available buffer frame glue and substrate, improve the structural stability of flexible element.
Description of drawings
The reader will become apparent various aspects of the present invention after the reference accompanying drawing has been read the specific embodiment of the present invention.Wherein,
Fig. 1 (a) illustrates the structural representation of flexible type display panel of the prior art;
Fig. 1 (b) illustrates the flexible type display panel of Fig. 1 (a) when bending, and the stress that produces between substrate and frame glue causes the view of substrate fracture;
Fig. 1 (c) illustrates the flexible type display panel of Fig. 1 (a) when bending, the view that the stress that produces between substrate and frame glue causes film portion to be peeled off;
Fig. 2 illustrates the structured flowchart according to the flexible type display panel of one embodiment of the present invention; And
Fig. 3 illustrates the flexible type display panel of Fig. 2 when substrate bends, the synoptic diagram of the corresponding radius-of-curvature of Young modulus of frame glue material.
Embodiment
For technology contents that the application is disclosed is more detailed and complete, can be with reference to accompanying drawing and following various specific embodiments of the present invention, identical mark represents same or analogous assembly in the accompanying drawing.Yet those of ordinary skill in the art should be appreciated that the embodiment that hereinafter provides limits the scope that the present invention is contained.In addition, accompanying drawing only is used for schematically being illustrated, and does not draw according to its life size.
With reference to the accompanying drawings, the embodiment of various aspects of the present invention is described in further detail.
Fig. 1 (a) illustrates the structural representation of flexible type display panel of the prior art.Shown in Fig. 1 (a), this flexible type display panel comprises a first substrate 101, a second substrate 201 and a frame glue 30, and first substrate 101 is positioned at the top of second substrate 201, and frame glue 30 is between first substrate 101 and second substrate 201.In addition, one optical thin film layer 103 also is set below first substrate 101, one optical thin film layer 203 also is set above second substrate 201, thereby by this optical thin film layer 103 and 203 and frame glue 30 between joint form an enclosure space, a so that accommodating display medium in this enclosure space, such as, liquid crystal molecule.
In some cases, pliability parts in this flexible type display panel do not bend, and at this moment, first substrate 101 is parallel to each other with second substrate 201, frame glue 30 is fixed with the bonding station of optical thin film layer 103, and frame glue 30 is fixed with the bonding station of optical thin film layer 203.Under other situations, the pliability parts in this flexible type display panel occur crooked, and at this moment, to a certain extent distortion can occur for first substrate 101, second substrate 201.As mentioned before, in the prior art, frame glue is generally thermoset resin or UV cured glue, it heats at two substrates 101 and 201, pressurization can be hardened after carrying out pressing, thus, frame glue bending after the sclerosis is difficulty relatively, even can produce damage because being subject to excessive stress, causes substrate fracture or active member damaged.
More specifically, Fig. 1 (b) illustrates the flexible type display panel of Fig. 1 (a) when bending, the stress that produces between substrate and frame glue causes the view of substrate fracture, Fig. 1 (c) illustrates the flexible type display panel of Fig. 1 (a) when bending, the view that the stress that produces between substrate and frame glue causes film portion to be peeled off.
With reference to Fig. 1 (b), first substrate 101 and optical thin film layer 103 are bent upwards, at this moment, the frame glue after the sclerosis is owing to suffer larger stress, and its a part of substrate 201b, a part of film 203b of optical thin film layer 203 in second substrate 201 moves upward.At this moment, the fracture situation can appear in second substrate 201 and optical thin film layer 203, that is, another part film 203a of another part substrate 201a of second substrate 201 and optical thin film layer 203, separated with the part film 203b of the part substrate 201b of second substrate 201 and optical thin film layer 203.
With reference to Fig. 1 (c), first substrate 101 and optical thin film layer 103 equally also are bent upwards, and the frame glue after the sclerosis is because suffering larger stress, and its a part of film 203b with optical thin film layer 203 moves upward.At this moment, the other parts film 203a of this optical thin film layer 203 and 203c still are positioned at the top of second substrate 201.Thus, the stress that frame glue 30 suffers has a strong impact on its optical property so that (peeling) situation appears peeling off in the part film of optical thin film layer 203, even can cause whole flexible display panel to scrap.
In order effectively to alleviate or reduce the caused above-mentioned puzzlement of stress between substrate and the frame glue, Fig. 2 illustrates the structured flowchart according to the flexible type display panel of one embodiment of the present invention.
With reference to Fig. 2, this flexible display panel comprises one first flexible base plate 401, one second flexible base plate 403 and a frame glue 405.Wherein, the second flexible base plate 403 is positioned at the below of the first flexible base plate 401, and is oppositely arranged with the first flexible base plate 401.Frame glue 405 is arranged between the first flexible base plate 401 and the second flexible base plate 403, as the involution spare of this flexible display panel, in order to the bonding first bendable substrate 401 and the second bendable substrate 403.For example, on the cross section of this flexible display panel, the frame glue 405 that integral body is frame type structure comprises a 405a of gummed section and the 405b of another gummed section.It is to be noted, be different from frame glue of the prior art, frame glue 405 of the present invention is made by a resilient material, this flexible display panel has a radius-of-curvature, and the numerical value of the Young modulus of frame glue 405 (Young ' s modulus) is big or small corresponding with this radius-of-curvature, when flexible base plate 401 and 403 and frame glue 405 between when compression stress occurring, this frame glue 405 can utilize the elastic deformation of himself material to alleviate or reduce this compression stress.
In one embodiment, the first flexible base plate 401 and the second flexible base plate 403 are made by plastic material.
In one embodiment, the material of frame glue 405 is polymethylmethacrylate (acrylic) or epoxy resin (epoxy).For example, the Young modulus of the frame glue of epoxy resin material is between between the 1000MPa to 10000MPa.
In addition, in above-mentioned Fig. 2, when flexible display panel did not bend, the bearing of trend of frame glue 405 and the first flexible base plate 401 were perpendicular, consist of an enclosure space by glue frame 405, the first flexible base plate 401 and the second flexible base plate 403, with an accommodating display medium.For example, the display medium in this enclosure space comprises liquid crystal, electrophoresis showed layer or organic electroluminescent device layer.
Fig. 3 illustrates the flexible type display panel of Fig. 2 when substrate bends, the synoptic diagram of the corresponding radius-of-curvature of Young modulus of frame glue material.
With reference to Fig. 3, take the second flexible base plate 403 as example, when the leftmost side of this second flexible base plate 403 and the rightmost side were bent downwardly, the second flexible base plate 403 and frame glue 405 were a circular shape.In the present invention, in order to reach the effect of alleviating the stress between substrate and frame glue by the frame glue of elastic material, the numerical relation between the Young modulus of the radius-of-curvature of flexible display panel and frame glue can be set accordingly.
In more detail, this flexible display panel (the first flexible base plate 401 or the second flexible base plate 403) has a radius of curvature R, and the Young modulus of frame glue 405 (Young ' s modulus) numerical value is big or small corresponding with radius of curvature R.When radius-of-curvature during greater than 100mm and less than 200mm, the Young modulus of frame glue 405 is between between the 2000MPa to 3000MPa.When radius-of-curvature during greater than 50mm and less than 100mm, the Young modulus of frame glue 405 is between between the 1000MPa to 2000MPa.When radius-of-curvature during less than 50mm, the Young modulus of frame glue 405 is less than 1000MPa.Hence one can see that, and the numerical value of the Young modulus of frame glue 405 is larger, and the radius-of-curvature of flexible display panel is larger, thereby the rigidity of flexible display panel is larger.Otherwise the numerical value of the Young modulus of frame glue 405 is less, and the radius-of-curvature of flexible display panel is less, thereby, flexible display panel flexible larger, and then substrate is relative less with stress between frame glue.
Adopt flexible display panel of the present invention, one frame glue is set between the first flexible base plate and the second flexible base plate, and this frame glue adopts resilient material to make, when bending appears in the flexible element in the flexible display panel, by the stress between this resilient bezel glue material available buffer frame glue and substrate, improve the structural stability of flexible element.
Above, describe the specific embodiment of the present invention with reference to the accompanying drawings.But those skilled in the art can understand, and in situation without departing from the spirit and scope of the present invention, can also do various changes and replacement to the specific embodiment of the present invention.These changes and replacement all drop in claims limited range of the present invention.
Claims (6)
1. a flexible display panel is characterized in that, described flexible display panel comprises:
One first flexible base plate;
One second flexible base plate is oppositely arranged with described the first flexible base plate; And
One frame glue, between described the first flexible base plate and described the second flexible base plate, in order to bonding the described first bendable substrate and the described second bendable substrate,
Wherein, described frame glue is made by a resilient material, and described flexible display panel has a radius-of-curvature, and the numerical value of the Young modulus of described frame glue (Young ' s modulus) and described radius-of-curvature is big or small corresponding.
2. flexible display panel according to claim 1 is characterized in that, the pass of the Young modulus of the radius-of-curvature of described flexible display panel and described frame glue is:
When radius-of-curvature during greater than 100mm and less than 200mm, the Young modulus of described frame glue is between between the 2000MPa to 3000MPa;
When radius-of-curvature during greater than 50mm and less than 100mm, the Young modulus of described frame glue is between between the 1000MPa to 2000MPa; And
When radius-of-curvature during less than 50mm, the Young modulus of described frame glue is less than 1000MPa.
3. flexible display panel according to claim 1 is characterized in that, described the first flexible base plate and described the second flexible base plate are made by plastic material.
4. flexible display panel according to claim 1 is characterized in that, the material of described frame glue is polymethylmethacrylate or epoxy resin.
5. flexible display panel according to claim 1, it is characterized in that, the bearing of trend of described frame glue and described the first flexible base plate are perpendicular, consist of an enclosure space by described frame glue, the first flexible base plate and the second flexible base plate, with an accommodating display medium.
6. flexible display panel according to claim 5 is characterized in that, described display medium comprises liquid crystal, electrophoresis showed layer or organic electroluminescent device layer.
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| CN 201210421935 CN102902109A (en) | 2012-10-29 | 2012-10-29 | Flexible display panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210421935 CN102902109A (en) | 2012-10-29 | 2012-10-29 | Flexible display panel |
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