Kamis, 10 Maret 2011

Lenovo Flicker

Laptop Lenovo apakah ada masalah dengan Led 14.1? Ada beberapa orang yang punya masalah dengan Led 14.1 yang di pakai oleh Lenovo yaitu FLICKER / tampilan gambar kedip, goyang - goyang, muncul garis horisontal dan akhirnya blank putih. Saya juga pernah mengganti Led 14.1 untuk Lenovo 3000Y430. dengan merk yang sama dengan aslinya LP141WX5 dan ternyata baru umur 2 bulan sudah muncul FLICKER . Sekarang saya ganti dengan merk AUO, semoga tidak ada masalah lagi. Menurut yang punya laptop tersebut umurnya belum genap 1 tahun sudah bermasalah, jadi bagi temen yang punya masalah dengan Flicker segera minta ganti LED baru.

Ada 2 orang yang punya masalah flicker juga ternyata lednya juga sama LP141WX5. Lenovo yang menggunakan LED 14.1 yaitu 3000Y430, 3000G430, Thinkpad T400. Mohon informasinya bagi temen temen yang punya masalah dengan Lenovo karena flicker, bisa diservice atau ganti dengan Led baru.

Keluhan Pengguna Lenovo Y430 di suara pembaca detik.com klik Jogjakarta Jakarta dan Surabaya


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Senin, 07 Maret 2011

Pembuatan TFT-LCD

As shown in Fig.1a, a liquid crystal of 3~4um is injected between the top and bottom transparent electrodes of LCDs. When there is no external electric field, the liquid crystal molecules will rotate by 90 degrees in the layer and cause the incident light polarization to rotate by 90 degrees along the long axis of liquid crystals by the waveguide phenomenon, which will transmit through the orthogonal polarizer and produce a bright screen. On the contrary, when there is a non-zero external electric field, the long axis of liquid crystals will be parallel to the field direction to maintain the minimum static potential. In this case, the light polarization stays unchanged and won’t be able to pass through the polarizer, leading to a dark state screen. In addition, the strength of the electric field across the liquid crystal layer can be controlled by changing the voltages applied to the pixel electrode, which can further modulate the strength of the incident light and produce a gray level screen between fully bright and completely dark. The current mainstream LCD design and manufacturer technique is the Active matrix (AM) LCD, which consists of Color filter (CF), TFT Array substrate, Backlight module, as shown in Fig. a. Each individual pixel of a TFT-LCD needs one set of TFT to control its voltage. To produce different colors in the lights generated by the backlight module and passing the liquid crystal, red, blue, and green color resists need to be coated on the CF glass to produce the full color effect combined with the gray level. When the TFT array and CF substrate are completely separated, liquid crystal is injected between the CF top plate and TFT bottom plate, followed by paired adhesion and completed by attaching the polarizer. This part of the process is called the LCD process. The final LCM process involves connection of the driver IC and PCBA to the glass substrate (JI process), followed by assembling with the backlight module (MA process) and is completed with the illumination test (Fig.1b).

Kutipan dari : http://www.auo.com/?sn=189&lang=en-US

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