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When was BOE listed and what is the stock code?

BOE A was listed in the A-share market on the main board of Shenzhen Stock Exchange on January 12, 2001. The stock code is 000725.
BOE B was listed in the B-share market of Shenzhen Stock Exchange on June 10, 1997. The stock code is 200725.

Who is the external auditor of BOE?

According to a resolution of the board of directors, KPMG Huazhen and KPMG serve as the auditor for the accounting statement audit and internal control audit of the company.

How often does BOE release financial reports?

We release quarter reports, semi-annual reports, and annual reports.

Do different Gen numbers represent different core technologies of the production lines?

The Gen numbers of LCD panel production lines are based on the size of the glass substrate. A production line of a higher Gen number produces bigger panels through economical cutting (Economical cutting is a way of cutting that makes the most of each glass substrate through reasonable planning and careful calculation based on a given substrate size). To produce displays for large TV sets, the production line must be Gen 6 or above so as to achieve the most economical cutting and the best utility rate.
However, the core technologies are basically the same for production lines with different Gen numbers. When Gen 8.5 lines are introduced, Gen 4.5, Gen 5, and Gen 6 lines are not necessarily out of use; while a Gen 10 line does not mean that a Gen 8.5 one is outdated. Production lines are selected mainly based on the product positioning and market demand. For example, BOE has both higher-level lines like the Gen 8.5 line and lower-level ones such as the Gen 4.5 ones; they are aimed at different market demands.

Gen

Glass Substrate Sizemm2

Gen 4

680×880

Gen 4.5

730×920

Gen 5

1100×1300

Gen 6

1500×1800

Gen 7

1870×2200

Gen 7.5

1950×2250

Gen 8.5

2200×2500

Gen 10

2880×3130

Gen 10.5

2940×3370


What production lines does BOE have?

Gen

Location

Technology

4.5

Chengdu

a-Si TFT-LCD

5

Brijing

a-Si TFT-LCD

5.5

Ordos

LTPS TFT-LCD/LTPS AMOLED

6

Hefei

a-Si TFT-LCD

Chengdu (under construction)

Flexible AMOLED

8.5

Beijing

a-Si TFT-LCD

Hefei

a-Si/Oxide TFT-LCD/Oxide AMOLED

Chongqing

a-Si/Oxide TFT-LCD

Fuzhou (under construction)

a-Si TFT-LCD

10.5

Hefei (under construction)

a-Si TFT-LCD

What are the production processes of an LCD panel?

The production processes of LCD panels include array, CF, cell, and module forming processes.
1. Array forming process: Form metal, semiconductor and isolator films by spluttering or vapor deposition; cover the films with photoresist, expose it after covering it with a plate of a certain shape, and develop it so that some photoresist can be removed to achieve the desired shape; etch the part of films without photoresist so that the desired shape is left; strip off the photoresist and test the result; repeat this process until the intended TFT array is formed.
2. CF forming process: It is similar to the array forming process. Form films on the glass substrate by ITO spluttering or deposition, cover the films with photoresist, expose it and then develop it to finally form an RGB filter layer corresponding to pixels. Color display is achieved with the TFT adjusting the amounts of red, green and blue light that penetrates the CF.
3. Cell forming process: An LCD panel is fabricated by joining the arrayed substrate and the color filter. Cell forming is a process that forms LCD cells. Sealant is applied to the substrate of the color filter, liquid crystal is instilled onto the arrayed substrate; and then the two substrates are joined in vacuum and cut into LCDs.
4. Module forming process: Attach a polaroid to each side of the panel, connect the panel to the control circuit board and other elements using an anisotropic conductive adhesive, and assemble the B/L (backlight) and B/Z (bezel), and a module is thus fabricated.

What is the difference between AMOLED and TFT technologies?

Among various new panel display products, organic light emitting diode (OLED) display attracts wide attention in the industry due to features such as active light emission, high responsiveness, ultra thinness, and flexibility. OLED display is categorized into passive matrix OLED (PMOLED) and active matrix OLED (AMOLED) based on how it is driven. Compared with PMOLED, AMOLED presents higher responsiveness, better contrast, and a wider visual angle, and is therefore more widely used.
Similar to TFT-LCD, AMOLED display uses the TFT circuit corresponding to each pixel to control the emission of light of OLED units. The difference is that AMOLED emits light by controlling the electric current passing through each OLED unit. Therefore, the two technologies require different substrate features. Yet the two still have much in common. The driver substrate, a key component of AMOLED, is still driven by TFT, and its fabrication process has a lot in common with the existing array and module forming processes of TFT-LCD fabrication and many relevant technologies and equipment can be shared. An existing TFT-LCD production line can meet the needs of AMOLED development and manufacturing after minor renovation and with some additional equipment.

What is oxide technology?

Compared with the traditional a-Si (amorphous silicon) TFT technology, oxide TFT technology, or oxide TFT back substrate technology requires a lower preparation temperature yet has a higher electron mobility, and it can be used in high-frequency and high-resolution display products. Moreover, it requires less equipment investment and lower operation & maintenance cost, compared with LTPS (low temperature polysilicon) TFT technology.
It should be noted here that oxide TFT technology is the key to AMOLED display. In order to put AMOLED display into mass production and apply it to large screens, the first challenge is TFT substrate development. Oxide TFT technology solves a major problem in large AMOLED substrate manufacturing and is a key breakthrough towards further mass production of AMOLED display products. LCDs and AMOLED displays made with oxide TFT technology present much better overall performance than similar a-Si TFT products in that the resolution is higher, images are more realistic & vivid, the refreshing rate is higher, the display is thinner and lighter, and the power efficiency is higher due to a higher light penetration rate.

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